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List of Fish Occurrence Records for Guyana
n=1585

Occurrence point list

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Species Locality Year Identifier
Acanthocharax microlepis ESSEQUIBO RIVER, ROCKSTONE   R.P. VARI
Acanthocharax microlepis ROCKSTONE   R.P. VARI
Acanthocharax microlepis ROCKSTONE, ESSEQUIBO RIVER AT STELLING(PIER), RAILROAD CUT BELOW TOWN, IN SMALL WOODLAND CREEK ON GLUCK ISLAND, ON/AROUND SAND BANK AT BEND ABOVE TOWN 1908 C.H. EIGENMANN
Acanthostracion quadricornis Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Acarichthys heckelii ESSEQUIBO RIVER, ABOVE ROCKSTONE   F.R. LAMONTE
Acarichthys heckelii ESSEQUIBO RIVER, ROCKSTONE 1937 F.R. LAMONTE
Acaronia nassa ARUBABO RIVER, TRIBUTARY OF KAKO-MAZARUNI 1939 M. STIASSNY,B. URBAIN,L.*
Acaronia nassa DEMERARA RIVER   M. STIASSNY,B. URBAIN,L.*
Acaronia nassa ESSEQUIBO RIVER, ROCKSTONE 1937 F.R. LAMONTE
Acaronia nassa LAMA STOP-OFF, LAMA CREEK, IN CANAL AND BELOW DAM 1908 C.H. EIGENMANN
Acestrorhynchus falcatus [occurrence summary]    
Acestrorhynchus falcatus BLACKWATER CREEK, ESSEQUIBO RIVER HEADWATERS 1938 A. FERNANDEZ Y.
Acestrorhynchus falcatus DEMERARA RIVER, WISMAR   F.R. LAMONTE
Acestrorhynchus falcatus DEMERARA RIVER, WISMAR   R.P. VARI
Acestrorhynchus falcatus ESSEQUIBO RIVER, ROCKSTONE 1937 F.R. LAMONTE
Acestrorhynchus falcatus HEADWATERS OF ESSEQUIBO RIVER BETWEEN MARUDI RIVER AND KUYUWINI RIVER MOUTH 1937 M.H. HARNICK
Acestrorhynchus falcatus UPPER MAZARUNI DISTRICT, KURUPUNG RIVER 1938 F.R. LAMONTE
Acestrorhynchus falcirostris Rockstone, Essequibo-River, Brit. Guayana   J. Gery rev. 1961
Acestrorhynchus microlepis ABANDONED FLOODED STONE QUARRY BEHIND GIDEON'S STORE, NORTH BANK MAZARUNI RIVER NEAR KARTABO, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Acestrorhynchus microlepis CEBO CREEK, NORTH BANK MAZARUNI RIVER, FEW HUNDRED YARDS EAST OF ST. EDWARDS CHURCH, KARTABO 1982 R.E. SCHMIDT
Acestrorhynchus microlepis DEMERARA RIVER, GEORGETOWN   R.P. VARI
Acestrorhynchus microlepis DEMERARA RIVER, MALALI AT CATARACT 1908 C.H. EIGENMANN
Acestrorhynchus microlepis DEMERARA RIVER, WISMAR   R.P. VARI
Acestrorhynchus microlepis DEMERARA RIVER, WISMAR   R.P. VARI
Acestrorhynchus microlepis HEADWATERS OF ESSEQUIBO RIVER BETWEEN MARUDI RIVER AND KUYUWINI RIVER MOUTH 1937 R.P. VARI
Acestrorhynchus microlepis KARTABO 1922 C.W. BEEBE; R.P. VARI
Acestrorhynchus microlepis KARTABO, JUNCTION MAZARUNI AND CUYUNI RIVERS, MARARUNI-POTARO DISTRICT   R.P. VARI
Acestrorhynchus microlepis NO FURTHER DATA   M. TOLEDO-PIZA
Acestrorhynchus microlepis ROCKSTONE, ESSEQUIBO RIVER AT STELLING(PIER), RAILROAD CUT BELOW TOWN, IN SMALL WOODLAND CREEK ON GLUCK ISLAND, ON/AROUND SAND BANK AT BEND ABOVE TOWN 1908 C.H. EIGENMANN
Acestrorhynchus microlepis Rockstone, Essequibo-River, Brit. Guayana   J. Gery rev. 1961
Acestrorhynchus microlepis SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Acestrorhynchus microlepis TRIBUTARY TO UPPER ESSEQUIBO RIVER, ONORA ABOVE BIG FALLS (UNOROWO RIVER) 1937 A. FERNANDEZ Y.
Acestrorhynchus microlepis TRIBUTARY TO UPPER ESSEQUIBO RIVER, ONORA ABOVE CATARACT (UNOROWO RIVER) 1937 B.A. BROWN,R.A. ARRINDELL
Acestrorhynchus nasutus Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Acestrorhynchus nasutus ESSEQUIBO RIVER, ABOVE ROCKSTONE   F.R. LAMONTE
Acestrorhynchus nasutus ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Acestrorhynchus nasutus Rockstone, Essequibo-River, Brit. Guayana   J. Gery rev. 1961
Acestrorhynchus nasutus UPPER MAZARUNI DISTRICT, KURUPUNG RIVER 1938 F.R. LAMONTE
Achirus achirus Demerava-River, Brit. Guayana   C.L. Hubbs det. 10.IX.1958
Achirus declivis [occurrence summary] 1969  
Achirus lineatus ESSEQUIBO RIVER, ROCKSTONE 1937 F.R. LAMONTE
Achirus lineatus ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Achirus lineatus ESSEQUIBO RIVER, ROCKSTONE 1937 F.R. LAMONTE
Aequidens paloemeuensis DEMERARA RIVER   M.L.J.STIASSNY,B.K.URBAIN
Aequidens paloemeuensis KARTABO, JUNCTION MAZARUNI AND CUYUNI RIVERS, MAZARUNI - POTARO DISTRICT   M.L.J. STIASSNY, *
Aequidens paloemeuensis WISMAR 1934 M.L.J.STIASSNY,B.K.URBAIN
Aequidens potaroensis ARUBABO RIVER, TRIBUTARY OF KAKO-MAZARUNI 1939 F.R. LAMONTE, F. WOOD
Aequidens potaroensis DEMERARA RIVER, WISMAR 1930 M. STIASSNY,B. URBAIN,L.*
Aequidens potaroensis Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Aequidens potaroensis KURUPUNG RIVER, GEORGETOWN   J.T. NICHOLS
Aequidens potaroensis MAZARUNI RIVER, KAMAKUSA   J.T. NICHOLS
Aequidens potaroensis ROCK QUARRY BEHIND GIDEON'S STORE, WEST BANK MAZARUNI RIVER, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Aequidens potaroensis SAMBITO FALLS, AMACURO RIVER   F.R. LAMONTE
Aequidens potaroensis UPPER MAZARUNI DISTRICT, KURUPUNG RIVER 1938 F.R. LAMONTE
Aequidens tetramerus ABANDONED QUARRY POOLS AND BARRACARA CREEK, EAST BANK MAZARUNI RIVER 1983 R.E. SCHMIDT
Aequidens tetramerus Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Aequidens tetramerus KAMARANG RIVER 1938 M.L.J. STIASSNY*
Aequidens tetramerus KARTABO 1924 M.L.J. STIASSNY, *
Aequidens tetramerus POOLS IN OLD ROCK QUARRY, EAST BANK MAZARUNI RIVER 1983 R.E. SCHMIDT
Aequidens tetramerus RUPUNUNI RIVER, WICHABAI (J. MELVILLE'S RANCH), 10 MILES NORTH OF DADANAWA 1938 M.L.J. STIASSNY*
Aequidens tetramerus WISMAR 1934 M.L.J.STIASSNY,B.K.URBAIN
Aetobatus narinari Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Ageneiosus inermis Rupununi R., Guyana, 2°-3°N, 50°20'W.    
Ageneiosus marmoratus DEMERARA RIVER, WISMAR   F.R. LAMONTE
Ageneiosus marmoratus KARTABO, CONFLUENCE MAZARUNI AND CUYUNI RIVERS, MAZARUNI-POTARO DISTRICT 1922 C.W. BEEBE; S.J. WALSH
Ageneiosus ucayalensis ABOUT 100 m OFF KARTABO POINT, CONFLUENCE MAZARUNI AND CUYUNI RIVERS, MAZARUNI-POTARO DISTRICT 1983 S.J. WALSH
Ageneiosus ucayalensis ABOUT 100 m OFF KARTABO POINT, CONFLUENCE MAZARUNI AND CUYUNI RIVERS, MAZARUNI-POTARO DISTRICT 1983 S.J. WALSH
Ageneiosus ucayalensis ABOUT 100 m OFF KARTABO POINT, CONFLUENCE MAZARUNI AND CUYUNI RIVERS, MAZARUNI-POTARO DISTRICT 1983 S.J. WALSH
Ageneiosus ucayalensis DEMERARA RIVER, SAND HILLS 1936 S.J. WALSH
Ageneiosus ucayalensis MARI-MARI RIVER, MALALI   S.J. WALSH
Ageneiosus ucayalensis SANDBAR ON NORTH BANK CUYUNI RIVER, JUST WEST OF CAOWRIE CREEK MOUTH, ESSEQUIBO DISTRICT 1982 S.J. WALSH
Agoniates halecinus ABOUT 100 m OFF KARTABO POINT, CONFLUENCE MAZARUNI AND CUYUNI RIVERS, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Agoniates halecinus ROCKSTONE    
Akawaio penak Mazaruni River, Kamarang, Zone 7 2008  
Albula vulpes Guyana Continental Shelf   D. Furnell
Albula vulpes Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Alectis ciliaris GUYANA OFF MOUTH ESQUIBO, NEW AMSTERDAM R    
Amblydoras affinis KAMUNI CREEK 1937 F.R. LAMONTE
Ammocryptocharax vintonae SHRIMP CREEK, TUKEIT BELOW THE LANDING 1908 C.H. EIGENMANN
Anableps anableps NORTHWEST DISTRICT, MORAWHANNA, BARIMA RIVER 1937 F.R. LAMONTE
Anableps anableps POTARO RIVER, TUMATUMARI   J.T. NICHOLS
Anableps microlepis GEORGETOWN DEMERARA RIVER 1973  
Anablepsoides immaculatus UPPER RIVER KAMERANG, 20 MILES ABOVE PARUIMA 1938 J.H. HUBER
Anablepsoides stagnatus DEMERARA RIVER, WISMAR   F.R. LAMONTE
Anablepsoides urophthalmus KARTABO, NEAR THE CUYUNI RIVER 1922 P.G.HOWES; M.N.FEINBERG*
Anablepsoides waimacui UPPER MAZARUNI DISTRICT, KURUPUNG RIVER 1938 F.R. LAMONTE
Anchoa spinifer DEMERARA RIVE DEMERARA RIVER 1973  
Anchovia surinamensis [occurrence summary]   G.J. NELSON
Anchovia surinamensis DEMERARA RIVER, WISMAR   G.J. NELSON
Anchovia surinamensis ESSEQUIBO RIVER, ROCKSTONE 1937 F.R. LAMONTE
Anchovia surinamensis KARTABO POINT, CONFLUENCE OF MAZARUNI AND CUYUNI RIVERS 1983 R.E. SCHMIDT; G. NELSON
Anchovia surinamensis SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT; G. NELSON
Anchovia surinamensis SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT; G. NELSON
Anchovia surinamensis SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRY CREEK 1983 R.E. SCHMIDT; G. NELSON
Anchovia surinamensis SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRY CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT; G. NELSON
Anchovia surinamensis SANDBAR ON NORTH BANK CUYUNI RIVER, JUST WEST OF CAOWRIE CREEK MOUTH, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT; G.NELSON
Anchovia surinamensis WHYAPE CREEK, FIRST CREEK ON NORTH BANK CUYUNI RIVER, WEST OF MOUTH 1982 R.E. SCHMIDT; G. NELSON
Anchovia surinamensis WISMAR   G.J. NELSON
Anchoviella guianensis DEMERARA RIVER, WISMAR   G.J. NELSON
Anchoviella guianensis SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT; G. NELSON
Anchoviella guianensis SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRY CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT; G. NELSON
Anchoviella guianensis SANDBAR ON NORTH BANK CUYUNI RIVER, JUST WEST OF CAOWRIE CREEK MOUTH 1982 R.E. SCHMIDT; G. NELSON
Anchoviella guianensis WHYAPE CREEK, FIRST CREEK ON NORTH BANK CUYUNI RIVER, WEST OF MOUTH 1982 R.E. SCHMIDT; G. NELSON
Anchoviella guianensis WISMAR   G.J. NELSON
Anchoviella manamensis KARTABO POINT, BETWEEN CUYUNI RIVER MOUTH AND MAZARUNI RIVER MOUTH 1982 G. NELSON
Anchoviella manamensis KARTABO POINT, CONFLUENCE OF MAZARUNI AND CUYUNI RIVERS 1983 G. NELSON
Anchoviella manamensis MAZARUNI RIVER MOUTH, KARTABO POINT 1982 G. NELSON
Anchoviella manamensis SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 G. NELSON
Anchoviella manamensis SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 G. NELSON
Anchoviella manamensis SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRY CREEK, MAZARUNI-POTARO DISTRICT 1983 G. NELSON
Anchoviella manamensis SANDBAR ON NORTH BANK CUYUNI RIVER, JUST WEST OF CAOWRIE CREEK MOUTH 1982 G. NELSON
Anchoviella manamensis SOUTH SHORE CUYUNI RIVER, ABOUT 2 MILES FROM KARTABO POINT, ESSEQUIBO DISTRICT 1982 G. NELSON
Anchoviella manamensis WHYAPE CREEK, FIRST CREEK ON NORTH BANK CUYUNI RIVER, WEST OF MOUTH 1982 G. NELSON
Ancistrus dolichopterus LITTLE TAKUTU RIVER AND TRIBUTARIES, MAZARAHALLY TAKUTU LUMBER CAMP, WEST SHORE MAZARUNI RIVER 1983 R.E. SCHMIDT
Ancistrus hoplogenys RUPUNUNI RIVER, TWOCA PAN 1908 C.H. EIGENMANN
Ancistrus temminckii BLACKWATER CREEK, ESSEQUIBO RIVER HEADWATERS 1938 A. FERNANDEZ Y.
Ancylopsetta cycloidea [occurrence summary] 1969  
Ancylopsetta kumperae Guiana coast, 6°45'N, 55°17'W, 24 fm.    
Anisotremus virginicus Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Anostomoides laticeps JUNCTION OF MAZARUNI-CUYUNI AND ESSEQUIBO RIVERS, BARTICA 1935 B.A.BROWN,M. TOLEDO-PIZA
Anostomus anostomus BLACKWATER CREEK, ESSEQUIBO RIVER HEADWATERS 1938 A. FERNANDEZ Y.
Anostomus anostomus CUYUNI RIVER HALFWAY BETWEEN LANDING AND MOUTH IN ESSEQUIBO, NEAR NABIE WAN (RIVER) 1937 A. FERNANDEZ Y.
Anostomus anostomus DEMERARA RIVER    
Anostomus anostomus DEMERARA RIVER, MALALI 1935 M. BUERKLI, R. INGLE
Anostomus anostomus DEMERARA RIVER, WISMAR    
Anostomus anostomus DEMERARA RIVER, WISMAR 1935  
Anostomus anostomus DEMERARA RIVER, WISMAR   A.S. PINKUS
Anostomus anostomus DEMERARA RIVER, WISMAR 1935 A.S. PINKUS
Anostomus anostomus DEMERARA RIVER, WISMAR   A.S. PINKUS; M. BUERKLI*
Anostomus anostomus DEMERARA RIVER, WISMAR   R. INGLE
Anostomus anostomus ERUKIN CREEK 1908 C.H. EIGENMANN
Anostomus anostomus Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Anostomus anostomus HEADWATERS OF ESSEQUIBO RIVER, BETWEEN MARUDI RIVER AND KUYUWINI RIVER MOUTH, JUST ABOVE MOUTH 1937 A. FERNANDEZ Y.
Anostomus anostomus KURUPUNG RIVER, GEORGETOWN   J.T. NICHOLS
Anostomus anostomus MALALI   A.S. PINKUS
Anostomus anostomus TRIBUTARY TO UPPER ESSEQUIBO RIVER, ONORA ABOVE BIG FALLS (UNOROWO RIVER) 1937 A. FERNANDEZ Y.
Anostomus anostomus TRIBUTARY TO UPPER ESSEQUIBO RIVER, ONORA ABOVE CATARACT (UNOROWO RIVER) 1937 A. FERNANDEZ Y.
Anostomus anostomus WISMAR    
Antennarius striatus Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Apareiodon agmatos Mazaruni River, sandy beach on right bank, downstream from village of Kamarang 2008  
Aphyocharax erythrurus ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Aphyocharax erythrurus ESSEQUIBO RIVER, ROCKSTONE   R.P. VARI
Aphyocharax erythrurus ROCKSTONE 1934 R.P. VARI
Aphyocharax erythrurus RUPUNUNI RIVER, SAVANNAH POND NEAR DADANAWA 1938 D. MARCY
Apionichthys dumerili BERBICE RIVER   F.R. LAMONTE
Apistogramma ortmanni ABANDONED FLOODED STONE QUARRY BEHIND GIDEON'S STORE, NORTH BANK MAZARUNI RIVER NEAR KARTABO, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Apistogramma ortmanni DEMERARA RIVER, WISMAR 1935  
Apistogramma ortmanni DEMERARA RIVER, WISMAR   F.R. LAMONTE
Apistogramma ortmanni ESSEQUIBO RIVER, ROCKSTONE 1937 F.R. LAMONTE
Apistogramma ortmanni LITTLE TAKUTU RIVER AND TRIBUTARIES, MAZARAHALLY TAKUTU LUMBER CAMP, WEST SHORE MAZARUNI RIVER 1983 R.E. SCHMIDT
Apistogramma ortmanni POTARO RIVER, TUMATUMARI   J.T. NICHOLS
Apistogramma ortmanni UPPER MAZARUNI DISTRICT, KURUPUNG RIVER 1938 F.R. LAMONTE
Apistogramma rupununi Rupununi R., Guyana, 2°-3°N, 50°20'W.    
Apistogramma steindachneri DEMERARA RIVER, WISMAR 1935  
Apistogramma steindachneri DEMERARA RIVER, WISMAR   F.R. LAMONTE
Apistogramma steindachneri ESSEQUIBO RIVER, ROCKSTONE 1937 F.R. LAMONTE
Apistogramma steindachneri Essequibo, bei Rockstone, Brit. Guayana   Koslowski det. II.1984
Apistogramma steindachneri LAMA STOP-OFF, LAMA CREEK, IN CANAL AND BELOW DAM 1908 C.H. EIGENMANN
Apistogramma steindachneri ROCK QUARRY BEHIND GIDEON'S STORE, WEST BANK MAZARUNI RIVER, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Apteronotus albifrons Brit. Guayana 1962  
Apteronotus bonapartii MARI-MARI RIVER, MALALI   F.R. LAMONTE
Arapaima gigas Rupununi River, Karanambo    
Ariomma bondi Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Ariomma regulus Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Aspredinichthys tibicen BERBICE RIVER   F.R.LAMONTE; C.J.FERRARIS
Aspredinichthys tibicen GEORGETOWN, TRENCHES 1908 C.H. EIGENMANN
Astyanax abramis UPPER MAZARUNI DISTRICT, KURUPUNG RIVER 1938 F. WOOD, F.R. LAMONTE
Astyanax bimaculatus ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Astyanax bimaculatus GEORGETOWN 1923 R. INCLE, M. BUERKLI
Astyanax bimaculatus GEORGETOWN, TRENCHES 1908 C.H. EIGENMANN
Astyanax bimaculatus JUNCTION MAZARUNI-CUYUNI AND ESSEQUIBO RIVERS BARTICA   F.R. LAMONTE
Astyanax bimaculatus SANTA ROSA, AMACURO RIVER 1938 F.R. LAMONTE
Astyanax bimaculatus YARAKITA RIVER 1937 F.R. LAMONTE
Astyanax microlepis GEORGETOWN   J.T. NICHOLS
Astyanax rupununi Rupununi R., Guyana, 2°-3°N, 50°20'W.    
Astyanax scintillans SAMBITO FALLS, AMACURA RIVER 1938  
Auchenipterus brevior DEMERARA RIVER, SAND HILLS 1936 F.R. LAMONTE
Auchenipterus demerarae DEMERARA RIVER   F.R. LAMONTE
Auchenipterus demerarae DEMERARA RIVER, MALALI 1935 C.J. FERRARIS
Auchenipterus demerarae DEMERARA RIVER, WISMAR   C.J. FERRARIS, R.P. VARI
Auxis thazard Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Awaous flavus BARRACARA CREEK ON EAST BANK MAZARUNI RIVER MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT, R.E. WATSON
Awaous flavus BATAVIA LANDING-GUYANA SAWMILLS, SOUTH BANK CUYUNI RIVER 1982 R.E. SCHMIDT, R.E. WATSON
Awaous flavus KARTABO POINT, BETWEEN CUYUNI RIVER MOUTH AND MAZARUNI RIVER MOUTH 1982 R.E. SCHMIDT, R.E. WATSON
Awaous flavus MAZARUNI RIVER MOUTH, KARTABO POINT 1982 R.E. SCHMIDT, R.E. WATSON
Awaous flavus SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT, R.E. WATSON
Awaous flavus SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT, R.E. WATSON
Awaous flavus SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRY CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT, R.E. WATSON
Awaous flavus SANDBAR ON NORTH BANK CUYUNI RIVER, JUST WEST OF CAOWRIE CREEK MOUTH 1982 R.E. SCHMIDT, R.E. WATSON
Awaous flavus SOUTH SHORE CUYUNI RIVER, ABOUT 2 MILES FROM KARTABO POINT, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT, R.E. WATSON
Bagre bagre GUYANA OFF MOUTH ESQUIBO, NEW AMSTERDAM R    
Bairdiella chrysoura ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Bairdiella ronchus GUYANA OFF MOUTH ESQUIBO, NEW AMSTERDAM R    
Balistes vetula Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Batrachoides surinamensis DEMERARA RIVER    
Batrachoides surinamensis DEMERARA RIVER   N. BORODIN
Batrochoglanis villosus ESSEQUIBO RIVER, ROCKSTONE 1936 F.R. LAMONTE
Batrochoglanis villosus POTARO RIVER, TUMATUMARI   J.T. NICHOLS
Biotodoma cupido CUYUNI RIVER AT MATOPE 1924 M.L.J. STIASSNY, *
Biotodoma cupido DEMERARA RIVER, MALALI    
Biotodoma cupido DEMERARA RIVER, MALALI   R. INGLE, M. BUERKLI
Biotodoma cupido DEMERARA RIVER, MALALI 1935 R. INGLE, M. BUERKLI
Biotodoma cupido DEMERARA RIVER, MARI-MARI 1934 R. INGLE, M. BUERKLI
Biotodoma cupido DEMERARA RIVER, WISMAR 1934 M.L.J.STIASSNY,B.K.URBAIN
Biotodoma cupido DEMERARA RIVER, WISMAR   R. INGLE, M. BUERKLI
Biotodoma cupido DEMERARA RIVER, WISMAR 1930 R. INGLE, M. BUERKLI
Biotodoma cupido DEMERARA RIVER, WISMAR 1935 R. INGLE, M. BUERKLI
Biotodoma cupido DEMERARA RIVER, WISMAR   R. INGLE, M. BUERKLI
Biotodoma cupido ESSEQUIBO RIVER, ROCKSTONE 1937 F.R. LAMONTE
Biotodoma cupido ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Biotodoma cupido KARTABO, CONFLUENCE CUYUNI AND MAZARUNI RIVERS 1922 M.L.J. STIASSNY
Biotodoma cupido LAMA STOP-OFF, LAMA CREEK, IN CANAL AND BELOW DAM 1908 C.H. EIGENMANN
Biotodoma cupido MALALI   A.S. PINKUS
Biotodoma cupido MALALI   R. INGLE, M. BUERKLI
Biotodoma cupido MARI-MARI RIVER, MALALI   F.R. LAMONTE
Biotoecus opercularis ROCKSTONE   M.L.J. STIASSNY
Biotoecus opercularis ROCKSTONE   M.L.J. STIASSNY
Bivibranchia fowleri ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Bivibranchia fowleri ESSEQUIBO RIVER, ROCKSTONE   R.P. VARI
Bivibranchia fowleri ROCKSTONE 1934 D.E. ROSEN, R.P. VARI
Bivibranchia fowleri ROCKSTONE   R.P. VARI
Bivibranchia fowleri TRIBUTARY TO UPPER ESSEQUIBO RIVER, ONORA ABOVE BIG FALLS (UNOROWO RIVER) 1937 A. FERNANDEZ Y.
Bothus ocellatus [occurrence summary] 1969  
Bothus ocellatus Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Bothus robinsi Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Boulengerella cuvieri JUNCTION MAZARUNI-CUYUNI AND ESSEQUIBO RIVERS BARTICA   R.P. VARI
Boulengerella cuvieri KARTABO 1922 C.W. BEEB; B.A. BROWN
Boulengerella cuvieri ROCKSTONE   J.W. ATZ, M.N. FEINBERG
Boulengerella cuvieri Rockstone, Essequibo-River, Brit. Guayana   J. Gery rev. 1961
Boulengerella cuvieri SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.P. VARI
Boulengerella cuvieri SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRY CREEK, MAZARUNI-POTARO DISTRICT 1983 R.P. VARI
Boulengerella lucius ABOUT 100 m OFF KARTABO POINT, CONFLUENCE MAZARUNI AND CUYUNI RIVERS, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Boulengerella lucius RUPUNUNI RIVER   R.P. VARI
Brachychalcinus orbicularis DEMERARA RIVER, MALALI TO GREAT FALLS 1934 R.P. VARI
Brachychalcinus orbicularis ESSEQUIBO RIVER, ROCKSTONE 1937 F.R. LAMONTE
Brachychalcinus orbicularis SANTA ROSA, AMACURO RIVER 1938  
Brachychalcinus orbicularis YARAKITA RIVER 1937 R.E. REIS
Brachyhypopomus brevirostris YARAKITA RIVER 1937 F.R. LAMONTE
Brachyplatystoma vaillantii ABOUT 100 m OFF KARTABO POINT, CONFLUENCE MAZARUNI AND CUYUNI RIVERS 1983 R.E. SCHMIDT
Brochiloricaria macrodon BERBICE RIVER   B.A. BROWN
Brochiloricaria macrodon DEMERARA RIVER, MALALI 1935 B.A. BROWN
Brochiloricaria macrodon DEMERARA RIVER, WISMAR   B.A. BROWN
Brochiloricaria macrodon KORA-KORA CREEK   B.A. BROWN
Brochiloricaria macrodon MALALI   B.A. BROWN
Brotula barbata Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Brycon falcatus CEBO CREEK, WEST BANK MAZARUNI RIVER, EAST OF ST. EDWARDS CHURCH, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Brycon falcatus ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Brycon falcatus ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Brycon falcatus ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Brycon falcatus ESSEQUIBO RIVER, ROCKSTONE   R. INGLE
Brycon falcatus JUNCTION MAZARUNI-CUYUNI AND ESSEQUIBO RIVERS BARTICA   F.R. LAMONTE
Brycon falcatus JUNCTION MAZARUNI-CUYUNI AND ESSEQUIBO RIVERS BARTICA   R.P. VARI
Brycon falcatus KARTABO, JUNCTION MAZARUNI AND CUYUNI RIVERS, MARARUNI-POTARO DISTRICT   R.P. VARI
Brycon falcatus ROCKSTONE   A.S. PINKUS
Brycon falcatus SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Brycon falcatus SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRY CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Brycon falcatus SANTA ROSA, AMACURO RIVER 1938 F.R. LAMONTE
Brycon falcatus SANTA ROSA, AMACURO RIVER 1938 F.R. LAMONTE
Brycon opalinus CUYUNI RIVER AT MATOPE 1924 D.M. RODRIGUEZ
Brycon pesu 2 MILES FROM KARTABO, JUNGLE STREAM AND POOL, PURUNI TRAIL 1922 R.P. VARI
Brycon pesu ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Brycon pesu ESSEQUIBO RIVER, ROCKSTONE   R.P. VARI
Brycon pesu FOREST STREAM EAST OF BATAVIA LANDING-GUYANA SAWMILLS, SOUTH BANK CUYUNI RIVER 1982 R.E. SCHMIDT
Brycon pesu JUNCTION MAZARUNI-CUYUNI AND ESSEQUIBO RIVERS BARTICA   R.P. VARI
Brycon pesu KARTABO   R.P. VARI
Brycon pesu KARTABO POINT, BETWEEN CUYUNI RIVER MOUTH AND MAZARUNI RIVER MOUTH 1982 R.E. SCHMIDT
Brycon pesu KARTABO POINT, CONFLUENCE OF MAZARUNI AND CUYUNI RIVERS 1983 R.E. SCHMIDT
Brycon pesu KARTABO, JUNCTION MAZARUNI AND CUYUNI RIVERS, MARARUNI-POTARO DISTRICT   R.P. VARI
Brycon pesu MAZARUNI RIVER MOUTH, KARTABO POINT 1982 R.E. SCHMIDT
Brycon pesu ROCKSTONE   A.S. PINKUS
Brycon pesu SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Brycon pesu SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Brycon pesu SANDBAR ON NORTH BANK CUYUNI RIVER, JUST WEST OF CAOWRIE CREEK MOUTH 1982 R.E. SCHMIDT
Brycon pesu SANDBAR ON NORTH BANK CUYUNI RIVER, JUST WEST OF CAOWRIE CREEK MOUTH, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Brycon pesu WHYAPE CREEK, FIRST CREEK ON NORTH BANK CUYUNI RIVER, WEST OF MOUTH 1982 R.E. SCHMIDT
Brycon pesu WISMAR   R.P. VARI
Bryconamericus deuterodonoides Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Bryconamericus peruanus Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Bryconamericus peruanus Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Bryconops affinis BARRACARA CREEK ON EAST BANK MAZARUNI RIVER MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Bryconops affinis DEMERARA RIVER, MALALI 1935 M. BUERKLI, R. INGLE
Bryconops affinis Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Bryconops affinis ESSEQUIBO RIVER, ROCKSTONE   R.P. VARI
Bryconops affinis KABURI ROCK, MAZARUNI RIVER   F.R. LAMONTE
Bryconops affinis KARTABO POINT, CONFLUENCE OF MAZARUNI AND CUYUNI RIVERS 1983 R.E. SCHMIDT
Bryconops affinis ROCKSTONE   R.P. VARI
Bryconops affinis ROCKSTONE   R.P. VARI
Bryconops affinis SAMBITO FALLS, AMACURO RIVER   F.R. LAMONTE
Bryconops affinis SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Bryconops affinis SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRY CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Bryconops affinis UPPER MAZARUNI DISTRICT, KURUPUNG RIVER 1938 F.R. LAMONTE
Bryconops affinis WISMAR   R.P. VARI
Bryconops caudomaculatus ARUAU RIVER, TRIBUTARY OF BARAMA NEAR ITS MOUTH IN THE WAINI 1937 F.R. LAMONTE
Bryconops caudomaculatus DEMERARA RIVER   R.P. VARI
Bryconops caudomaculatus DEMERARA RIVER, WISMAR   F.R. LAMONTE
Bryconops caudomaculatus Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Bryconops caudomaculatus ESSEQUIBO RIVER, ROCKSTONE 1938 F.R. LAMONTE
Bryconops caudomaculatus KARTABO, JUNCTION MAZARUNI AND CUYUNI RIVERS, MAZARUNI - POTARO DISTRICT 1924 C.W. BEEBE; R.P. VARI
Bryconops caudomaculatus MAZARUNI RIVER, KAMAKUSA   J.T. NICHOLS
Bryconops caudomaculatus ROCKSTONE   R.P. VARI
Bryconops caudomaculatus ROCKSTONE, SMALL WOODLAND STREAM ON GLUCK ISLAND 1908 C.H. EIGENMANN
Bryconops caudomaculatus UPPER MAZARUNI DISTRICT, KURUPUNG RIVER 1938 F.R. LAMONTE
Bryconops caudomaculatus WISMAR   R.P. VARI
Bryconops melanurus DEMERARA RIVER, MALALI TO GREAT FALLS 1934 R.P. VARI
Bryconops melanurus Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Bryconops melanurus GEORGETOWN   J.T. NICHOLS
Bryconops melanurus POTARO RIVER, ABOVE KAIETEUR FALLS 1911  
Bryconops melanurus UPPER MAZARUNI DISTRICT, MACKREBA FALLS, KURUPUNG RIVER 1939 R.P. VARI
Bryconops melanurus WISMAR   R.P. VARI
Bryconops melanurus WISMAR   R.P. VARI
Bryconops melanurus WISMAR 1934 R.P. VARI
Bujurquina vittata ABANDONED FLOODED STONE QUARRY BEHIND GIDEON'S STORE, NORTH BANK MAZARUNI RIVER NEAR KARTABO, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Bujurquina vittata DEMERARA RIVER   F.R. LAMONTE
Bujurquina vittata Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Bujurquina vittata LAMA STOP-OFF, LAMA CREEK, IN CANAL AND BELOW DAM 1908 C.H. EIGENMANN
Bujurquina vittata LAMA STOP-OFF, LAMA CREEK, IN CANAL AND BELOW DAM 1908 C.H. EIGENMANN
Bunocephalus chamaizelus UPPER MAZARUNI DISTRICT, KURUPUNG RIVER 1938 F.R. LAMONTE
Bunocephalus verrucosus ESSEQUIBO RIVER, ABOVE ROCKSTONE    
Caenotropus labyrinthicus Rupununi R., Guyana, 2°-3°N, ?50°20'W.    
Caenotropus maculosus CEBO CREEK, NORTH BANK MAZARUNI RIVER, FEW HUNDRED YARDS EAST OF ST. EDWARDS CHURCH, KARTABO 1982 R.E. SCHMIDT
Caenotropus maculosus ESSEQUIBO RIVER, ROCKSTONE 1936 F.R. LAMONTE
Caenotropus maculosus ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE; R.P. VARI
Caenotropus maculosus ESSEQUIBO RIVER, ROCKSTONE 1938 M. TOLEDO-PIZA
Caenotropus maculosus ESSEQUIBO RIVER, ROCKSTONE   R.P. VARI
Caenotropus maculosus HEADWATERS OF ESSEQUIBO RIVER, BETWEEN MARUDI RIVER AND KUYUWINI RIVER MOUTH, JUST ABOVE MOUTH 1937 M. TOLEDO-PIZA
Caenotropus maculosus MCTURK'S RANCH, KARANAMBO ON RUPUNUNI RIVER JUST BELOW YUPUKARRI, FROM SUNKEN BOAT 1937 M. TOLEDO-PIZA
Caenotropus maculosus POTARO RIVER, TUMATUMARI   J.T. NICHOLS; R.P. VARI
Caenotropus maculosus ROCKSTONE   M.H. HARNICK
Caenotropus maculosus SANTA ROSA, AMACURO RIVER 1938 F.R. LAMONTE; R.P. VARI
Caenotropus maculosus TRIBUTARY TO UPPER ESSEQUIBO RIVER, ONORA ABOVE BIG FALLS (UNOROWO RIVER) 1937 A. FERNANDEZ Y.
Calamus pennatula Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Callichthys callichthys CONTINGA CREEK 1924 C.W. BEEBE
Callichthys callichthys DEMERARA RIVER, WISMAR   F.R. LAMONTE
Callichthys callichthys DEMERARA RIVER, WISMAR 1935 R.E. REIS
Callichthys callichthys MARUDI MOUNTAINS, UPPER RUPUNUNI RIVER 1938 A. FERNANDEZ Y.
Callichthys callichthys MAZARUNI-POTARO DISTRICT, VICINITY OF KARTABO NEAR JUNCTION OF MAZARUNI AND CUYUNI RIVERS 1922 C.W. BEEBE
Callichthys callichthys POTARO RIVER, TUMATUMARI   J.T. NICHOLS
Callichthys callichthys POTARO RIVER, TUMATUMARI   J.T. NICHOLS
Caranx crysos Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Caranx hippos GUYANA OFF MOUTH ESQUIBO, NEW AMSTERDAM R    
Carcharhinus limbatus GUYANA OFF MOUTH ESQUIBO, NEW AMSTERDAM R    
Carnegiella strigata Brit. Guayana    
Carnegiella strigata DEMERARA RIV DEMERARA RIVER 1973  
Carnegiella strigata DEMERARA RIVER    
Carnegiella strigata DEMERARA RIVER   R.P. VARI
Carnegiella strigata DEMERARA RIVER, MALALI 1935  
Carnegiella strigata DEMERARA RIVER, WISMAR   F.R. LAMONTE
Carnegiella strigata MADUNI STOP-OFF, MADUNI CREEK, IN CANAL AND BELOW THE DAM 1908 C.H. EIGENMANN
Carnegiella strigata ROCKSTONE 1933 A.S. PINKUS
Carnegiella strigata Rockstone, Essequibo-River, Brit. Guayana    
Caulolatilus cyanops Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Caulolatilus intermedius Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Centromochlus carolae Cuyuni-Mazaruni, Cuyuni River, sand island in middle of river just downstream from Kurutuku 2011  
Centropomus parallelus GEORGETOWN DEMERARA RIVER 1973  
Centropomus undecimalis DEMERARA RIVER    
Centropomus undecimalis POTARO RIVER, TUMATUMARI   N. BORODIN
Chaetodipterus faber Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Chaetodipterus faber Paramaribo, Brit.-Guayana 1910  
Chalceus macrolepidotus AKIMA ISLAND 1924 R.P. VARI
Chalceus macrolepidotus BARTICA 1935 A.S. PINKUS
Chalceus macrolepidotus ESSEQUIBO RIVER, ROCKSTONE    
Chalceus macrolepidotus ESSEQUIBO RIVER, ROCKSTONE 1937 F. WOOD, F.R. LAMONTE
Chalceus macrolepidotus ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Chalceus macrolepidotus ESSEQUIBO RIVER, ROCKSTONE 1937 F.R. LAMONTE
Chalceus macrolepidotus ESSEQUIBO RIVER, ROCKSTONE 1937 F.R. LAMONTE
Chalceus macrolepidotus ESSEQUIBO RIVER, ROCKSTONE 1937 F.R. LAMONTE
Chalceus macrolepidotus HEADWATERS OF ESSEQUIBO RIVER, BETWEEN MARUDI RIVER AND KUYUWINI RIVER MOUTH, JUST ABOVE MOUTH 1937 C.J. FERRARIS
Chalceus macrolepidotus JUNCTION MAZARUNI-CUYUNI AND ESSEQUIBO RIVERS BARTICA   R.P. VARI
Chalceus macrolepidotus KARTABO, JUNCTION MAZARUNI AND CUYUNI RIVERS, MARARUNI-POTARO DISTRICT   R.P. VARI
Chalceus macrolepidotus SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Chalceus macrolepidotus TUMATUMARI, SANDBARS ABOVE AND BELOW THE CATARACT, IN CATARACT,AND SMALL AFFLUENT TRIBUTARY BELOW CATARACT 1908 C.H. EIGENMANN
Characidium amaila Kuribrong River drainage, a tributary of the Potaro/Essequibo River system, confluence of the Amaila and Kuribrong rivers immediately above Amaila Falls (Rapids 1), Region 8 2011  
Characidium fasciatum Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Characidium fasciatum LITTLE TAKUTU RIVER AND TRIBUTARIES, MAZARAHALLY TAKUTU LUMBER CAMP, WEST SHORE MAZARUNI RIVER 1983 R.E. SCHMIDT
Characidium steindachneri MEMBARU CREEK, TRIBUTARY OF UPPER MAZARUNI RIVER 1938 F. WOOD, F.R. LAMONTE
Characidium zebra Rupununi R., Guyana, 2°-3°N, 50°20'W.    
Charax gibbosus DEMERARA RIVER, MALALI TO GREAT FALLS 1934 R.P. VARI
Charax gibbosus Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Charax gibbosus Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Charax gibbosus ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Charax gibbosus GEORGETOWN   J.T. NICHOLS
Charax gibbosus GEORGETOWN, TRENCHES 1908 C.H. EIGENMANN
Charax gibbosus Guiana    
Charax gibbosus POTARO RIVER, TUMATUMARI   J.T. NICHOLS
Charax hemigrammus ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Charax hemigrammus UPPER MAZARUNI DISTRICT, KURUPUNG RIVER 1938 F.R. LAMONTE
Chilodus punctatus ABOVE ROCKSTONE   A.S. PINKUS
Chilodus punctatus DEMERARA RIVER   R.P. VARI
Chilodus punctatus MALALI   F.R. LAMONTE
Chilodus punctatus ROCKSTONE   M. TOLEDO-PIZA
Chilodus punctatus ROCKSTONE, ESSEQUIBO RIVER AT STELLING(PIER), RAILROAD CUT BELOW TOWN, IN SMALL WOODLAND CREEK ON GLUCK ISLAND, ON/AROUND SAND BANK AT BEND ABOVE TOWN 1908 C.H. EIGENMANN
Chilodus punctatus RUPUNUNI RIVER, SAVANNAH POND NEAR DADANAWA 1938 D. MARCY
Chilodus punctatus WISMAR   F.R. LAMONTE
Chilomycterus schoepfii Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Chloroscombrus chrysurus DEMERARA RIVE DEMERARA RIVER 1973  
Chloroscombrus chrysurus Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Cichla ocellaris DEMERARA RIVER   R. INGLE, M. BUERKLI
Cichla ocellaris DEMERARA RIVER, MALALI 1935 R. INGLE, M. BUERKLI
Cichla ocellaris DEMERARA RIVER, MALALI   R. INGLE, M. BUERKLI
Cichla ocellaris DEMERARA RIVER, MALALI   R. INGLE, M. BUERKLI
Cichla ocellaris ESSEQUIBO POND, ROCKSTONE 1937 F.R. LAMONTE
Cichla ocellaris ESSEQUIBO RIVER, ROCKSTONE    
Cichla ocellaris ESSEQUIBO RIVER, ROCKSTONE   R. INGLE, M. BUERKLI
Cichla ocellaris KARTABO 1924 C.W. BEEBE; M.N. FEINBERG
Cichla ocellaris KARTABO 1924 M.L.J. STIASSNY, *
Cichla ocellaris MARI-MARI RIVER, MALALI   F.R. LAMONTE
Cichla ocellaris ROCKSTONE AND LAMA STOP-OFF 1908 C.H. EIGENMANN
Cichlasoma bimaculatum DEMERARA RIV DEMERARA RIVER 1973  
Cichlasoma bimaculatum DEMERARA RIVER   J.T. NICHOLS
Cichlasoma bimaculatum DEMERARA RIVER   J.T. NICHOLS
Cichlasoma bimaculatum ESSEQUIBO RIVER, ROCKSTONE 1937 F.R. LAMONTE
Cichlasoma bimaculatum ESSEQUIBO RIVER, ROCKSTONE 1937 F.R. LAMONTE
Cichlasoma bimaculatum GEORGETOWN   R. INGLE, M. BUERKLI
Cichlasoma bimaculatum GEORGETOWN 1923 R. INGLE, M. BUERKLI
Cichlasoma bimaculatum GEORGETOWN, TRENCHES 1908 C.H. EIGENMANN
Cichlasoma bimaculatum SAMBITO FALLS, AMACURO RIVER   F.R. LAMONTE
Cichlasoma bimaculatum SANTA ROSA, AMACURO RIVER   F.R. LAMONTE
Cichlasoma bimaculatum YARAKITA RIVER 1937 F.R. LAMONTE
Cichlasoma bimaculatum YARAKITA RIVER 1937 F.R. LAMONTE
Citharichthys spilopterus [occurrence summary] 1969  
Citharichthys spilopterus KARTABO POINT, BETWEEN CUYUNI RIVER MOUTH AND MAZARUNI RIVER MOUTH 1982 R.E. SCHMIDT
Cleithracara maronii DEMERARA RIVER, WISMAR   A.S. PINKUS
Cleithracara maronii DEMERARA RIVER, WISMAR   F.R. LAMONTE
Cleithracara maronii DEMERARA RIVER, WISMAR 1930 M. STIASSNY,B. URBAIN,L.*
Cleithracara maronii DEMERARA RIVER, WISMAR   M.L.J.STIASSNY,B.K.URBAIN
Colomesus asellus ABOVE ROCKSTONE   A.S. PINKUS; R.E. SCHMIDT
Colomesus asellus JUNCTION MAZARUNI-CUYUNI AND ESSEQUIBO RIVERS BARTICA   F.R. LAMONTE
Colomesus asellus KARTABO POINT, BETWEEN CUYUNI RIVER MOUTH AND MAZARUNI RIVER MOUTH 1982 R.E. SCHMIDT
Colomesus asellus MAZARUNI RIVER MOUTH, KARTABO POINT 1982 R.E. SCHMIDT
Colomesus asellus SANDBAR ON NORTH BANK CUYUNI RIVER, JUST WEST OF CAOWRIE CREEK MOUTH, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Colomesus psittacus DEMERARA RIVER   M.H.HARNICK,D.M.RODRIGUEZ
Colomesus psittacus DEMERARA RIVER, MALALI TO GREAT FALLS 1934 R.A. ARRINDELL
Colomesus psittacus GEORGETOWN   J.C. TYLER
Colomesus psittacus NORTHWEST DISTRICT, MORAWHANNA, BARIMA RIVER 1937 F.R. LAMONTE
Conodon nobilis GUYANA OFF MOUTH ESQUIBO, NEW AMSTERDAM R    
Copella arnoldi ARUAU RIVER, TRIBUTARY OF BARAMA NEAR ITS MOUTH IN THE WAINI 1937 F.R. LAMONTE
Copella arnoldi DEMERARA RIVER, WISMAR   F.R. LAMONTE
Copella arnoldi ESSEQUIBO POND, ROCKSTONE 1937 F.R. LAMONTE
Copella arnoldi UPPER MAZARUNI DISTRICT, KURUPUNG RIVER 1938 F.R. LAMONTE
Copella arnoldi YARAKITA RIVER 1937 F.R. LAMONTE
Copella arnoldi YARAKITA RIVER 1937 F.R. LAMONTE
Copella arnoldi YARAKITA RIVER 1937 F.R. LAMONTE
Copella compta ARUBABO RIVER, TRIBUTARY OF KAKO-MAZARUNI 1939 F. WOOD, F.R. LAMONTE
Corydoras blochi Moco Creek near Lehtem, 3°18'N, 59°46'W, trib. of Rio Tacutu, Rio Branco system, Essequibo, Guyana.    
Corydoras melanistius DEMERARA RIVER, MALALI 1935 H. NYSSEN
Corydoras melanistius DEMERARA RIVER, MARI MARI 1965  
Corydoras melanistius DEMERARA RIVER, WISMAR   H. NYSSEN
Corydoras melanistius MALALI    
Corydoras melanistius MARI-MARI RIVER, MALALI   F.R. LAMONTE
Corydoras melanistius ROCKSTONE, ESSEQUIBO RIVER AT STELLING(PIER), RAILROAD CUT BELOW TOWN, IN SMALL WOODLAND CREEK ON GLUCK ISLAND, ON/AROUND SAND BANK AT BEND ABOVE TOWN 1908 H. NYSSEN
Corydoras potaroensis Creek below Potaro Landing (5°20'N, 59°05'W), Potaro R., Essequibo, Guyana.    
Corydoras punctatus DEMERARA RIVER, WISMAR   F.R. LAMONTE
Corymbophanes andersoni Aruataima Falls, Upper Potaro R., Guyana, 5°00'05'N, 59°37'33"W.    
Corymbophanes kaiei Oung Creek, Chenapou River-Potaro River drainage), about 1 hour hike southwest of coordinates 04°58'26"N, 59°34'41"W, (mouth of Chenapou R.), Potaro-Siparuni region, Guyana.    
Creagrutus melanzonus LITTLE TAKUTU RIVER AND TRIBUTARIES, MAZARAHALLY TAKUTU LUMBER CAMP, WEST SHORE MAZARUNI RIVER 1983 R.E. SCHMIDT
Creagrutus melanzonus POTARO RIVER, TUMATUMARI   J.T. NICHOLS
Crenicichla alta ABANDONED FLOODED STONE QUARRY BEHIND GIDEON'S STORE, NORTH BANK MAZARUNI RIVER NEAR KARTABO, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Crenicichla alta Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Crenicichla alta KARTABO 1920 C.W.BEEBE;BROWN,ARRINDELL
Crenicichla alta Rupununi R., Guyana, 2°-3°N, 50°20'W.    
Crenicichla alta SAMBITO FALLS, AMACURO RIVER   F.R. LAMONTE
Crenicichla alta UPPER MAZARUNI DISTRICT, KURUPUNG RIVER 1939 F. WOOD, F.R. LAMONTE
Crenicichla alta YARAKITA RIVER 1937 F.R. LAMONTE
Crenicichla brasiliensis JUNCTION MAZARUNI-CUYUNI AND ESSEQUIBO RIVERS BARTICA   F.R. LAMONTE
Crenicichla johanna MARI-MARI RIVER, MALALI   F.R. LAMONTE
Crenicichla johanna UPPER MAZARUNI DISTRICT, KURUPUNG RIVER 1938 F.R. LAMONTE
Crenicichla lugubris CEBO CREEK, NORTH BANK MAZARUNI RIVER, FEW HUNDRED YARDS EAST OF ST. EDWARDS CHURCH, KARTABO 1982 R.E. SCHMIDT
Crenicichla lugubris CEBO CREEK, WEST BANK MAZARUNI RIVER, EAST OF ST. EDWARDS CHURCH, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Crenicichla lugubris DEMERARA RIVER, WISMAR   F.R. LAMONTE
Crenicichla lugubris KARTABO 1924 C.W.BEEBE;M.L.J.STIASSNY*
Crenicichla lugubris KARTABO POINT, BETWEEN CUYUNI RIVER MOUTH AND MAZARUNI RIVER MOUTH 1982 R.E. SCHMIDT
Crenicichla lugubris TRIBUTARY TO UPPER ESSEQUIBO RIVER, ONORA ABOVE BIG FALLS (UNOROWO RIVER) 1937 A. FERNANDEZ Y.
Crenicichla lugubris UPPER MAZARUNI DISTRICT, KURUPUNG RIVER 1939 F. WOOD, F.R. LAMONTE
Crenicichla saxatilis ARUAU RIVER, TRIBUTARY OF BARAMA NEAR ITS MOUTH IN THE WAINI 1937 F.R. LAMONTE
Crenicichla saxatilis DEMERARA RIVER   J.T. NICHOLS
Crenicichla saxatilis DEMERARA RIVER, MALALI   R. INGLE, M. BUERKLI
Crenicichla saxatilis DEMERARA RIVER, WISMAR 1935 D.E. ROSEN, et al.
Crenicichla saxatilis DEMERARA RIVER, WISMAR 1935 M. BUERKLI
Crenicichla saxatilis DEMERARA RIVER, WISMAR   M. BUERKLI, R. INGLE
Crenicichla saxatilis GEORGETOWN   C.H. EIGENMANN
Crenicichla saxatilis GEORGETOWN    
Crenicichla saxatilis GEORGETOWN    
Crenicichla saxatilis MARI-MARI RIVER, MALALI   F.R. LAMONTE
Crenicichla saxatilis POTARO RIVER, TUMATUMARI   J.T. NICHOLS
Crenicichla saxatilis POTARO RIVER, TUMATUMARI   J.T. NICHOLS
Crenicichla saxatilis POTARO RIVER, TUWATUWA    
Crenicichla saxatilis SANTA ROSA, AMACURO RIVER 1938 F.R. LAMONTE
Crenicichla saxatilis YARAKITA RIVER 1937 F.R. LAMONTE
Crenicichla wallacii CEBO CREEK, WEST BANK MAZARUNI RIVER, EAST OF ST. EDWARDS CHURCH, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Crenicichla wallacii DEMERARA RIVER, MALALI TO GREAT FALLS 1934 R. INGLE, M. BUERKLI
Crenicichla wallacii MARI-MARI RIVER, MALALI   F.R. LAMONTE
Crenicichla wallacii MAZARUNI-POTARO DISTRICT, VICINITY OF KARTABO NEAR JUNCTION OF MAZARUNI AND CUYUNI RIVERS 1924 C.W. BEEBE
Crenicichla wallacii ROCK QUARRY BEHIND GIDEON'S STORE, WEST BANK MAZARUNI RIVER, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Crenicichla wallacii ROCKSTONE, ESSEQUIBO RIVER AT STELLING(PIER), RAILROAD CUT BELOW TOWN, IN SMALL WOODLAND CREEK ON GLUCK ISLAND, ON/AROUND SAND BANK AT BEND ABOVE TOWN 1908 C.H. EIGENMANN
Crenicichla wallacii SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Crenuchus spilurus Brit. Guayana 1965 J. Gery rev. 1961
Crenuchus spilurus DEMERARA RIVER   B.A. BROWN
Crenuchus spilurus ESSEQUIBO RIVER 1934 R.P. VARI
Crenuchus spilurus KORA-KORA CREEK   F.R. LAMONTE
Cteniloricaria platystoma LITTLE TAKUTU RIVER AND TRIBUTARIES, MAZARAHALLY TAKUTU LUMBER CAMP, WEST SHORE MAZARUNI RIVER 1983 R.E. SCHMIDT
Cteniloricaria platystoma WARRAPUTA CATARACT AND IN ROCKS ABOVE FALLS 1908 C.H. EIGENMANN
Ctenobrycon spilurus Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Ctenobrycon spilurus GEORGETOWN, TRENCHES 1908 C.H. EIGENMANN
Ctenobrycon spilurus LAMAHA CANAL, EAST OF DEMERARA RIVER    
Ctenolucius hujeta ESSEQUIBO RIVER, ROCKSTONE   R.P. VARI
Ctenolucius hujeta KARTABO, JUNCTION MAZARUNI AND CUYUNI RIVERS, MARARUNI-POTARO DISTRICT   R.P. VARI
Ctenosciaena gracilicirrhus Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Curimata cyprinoides CEBO CREEK, WEST BANK MAZARUNI RIVER, EAST OF ST. EDWARDS CHURCH, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Curimata cyprinoides CUYUNI RIVER, ca. 2 MILES FROM KARTABO 1982 R.P. VARI
Curimata cyprinoides CUYUNI RIVER, SANDBAR ca. 2 MILES FROM KARTABO 1982 R.P. VARI
Curimata cyprinoides KORIABO, BARIMA RIVER 1908 R.P. VARI
Curimata cyprinoides POTARO RIVER, TUMATUMARI   R.P. VARI
Curimatella immaculata RUPUNUNI RIVER, SAVANNAH POND NEAR DADANAWA 1938 R.P. VARI
Curimatopsis cryptica Stream 2 km east of Lake Amucu, Rupununi Dist., Guyana, ca. 3°43'N, 59°25'W.    
Curimatopsis macrolepis ESSEQUIBO RIVER, ROCKSTONE    
Curimatopsis macrolepis ESSEQUIBO RIVER, ROCKSTONE   R.P. VARI
Curimatopsis macrolepis ROCKSTONE, ESSEQUIBO RIVER AT STELLING(PIER), RAILROAD CUT BELOW TOWN, IN SMALL WOODLAND CREEK ON GLUCK ISLAND, ON/AROUND SAND BANK AT BEND ABOVE TOWN 1908 C.H. EIGENMANN
Curimatopsis macrolepis Rockstone, Essequibo River, Brit. Guayana 1933  
Cyclopsetta chittendeni [occurrence summary] 1969  
Cyclopsetta chittendeni [occurrence summary] 1969  
Cyclopsetta chittendeni [occurrence summary] 1969  
Cyclopsetta chittendeni [occurrence summary] 1969  
Cyclopsetta chittendeni [occurrence summary] 1969  
Cyclopsetta chittendeni [occurrence summary] 1969  
Cyclopsetta chittendeni [occurrence summary] 1969  
Cyclopsetta chittendeni [occurrence summary] 1969  
Cyclopsetta chittendeni Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Cyclopsetta fimbriata Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Cynodon gibbus ABOUT 100 m OFF KARTABO POINT, CONFLUENCE MAZARUNI AND CUYUNI RIVERS 1983 R.E. SCHMIDT
Cynodon gibbus KARTABO, JUNCTION MAZARUNI AND CUYUNI RIVERS, MAZARUNI - POTARO DISTRICT 1924  
Cynodon gibbus NO FURTHER DATA   M. TOLEDO-PIZA
Cynodon gibbus TRIBUTARY TO UPPER ESSEQUIBO RIVER, ONORA ABOVE BIG FALLS (UNOROWO RIVER) 1937 M. TOLEDO-PIZA
Cynodon gibbus TRIBUTARY TO UPPER ESSEQUIBO RIVER, ONORA ABOVE CATARACT (UNOROWO RIVER) 1937 M. TOLEDO-PIZA
Cynopotamus essequibensis Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Cynopotamus essequibensis KARTABO 1922 C.W. BEEBE
Cynoscion acoupa GEORGETOWN   N. BORODIN
Cynoscion virescens GEORGETOWN DEMERARA RIVER 1973  
Cyphocharax festivus ROCKSTONE, ESSEQUIBO RIVER AT STELLING(PIER), RAILROAD CUT BELOW TOWN, IN SMALL WOODLAND CREEK ON GLUCK ISLAND, ON/AROUND SAND BANK AT BEND ABOVE TOWN 1908 R.P. VARI
Cyphocharax helleri SANTA ROSA, AMACURO RIVER 1938 R.P. VARI
Cyphocharax helleri YARAKITA RIVER 1937 R.P. VARI
Cyphocharax helleri YARAKITA RIVER 1937 R.P. VARI
Cyphocharax microcephalus ESSEQUIBO RIVER, ROCKSTONE 1937 F.R. LAMONTE; R.P. VARI
Cyphocharax spilurus ABANDONED FLOODED STONE QUARRY BEHIND GIDEON'S STORE, NORTH BANK MAZARUNI RIVER NEAR KARTABO, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT; R.P. VARI
Cyphocharax spilurus CUYUNI RIVER AT MATOPE 1924 R.P. VARI
Cyphocharax spilurus DEMERARA RIVER, MALALI 1935 R. INGLE, M. BUERKLI
Cyphocharax spilurus DEMERARA RIVER, MALALI TO GREAT FALLS 1934 R.P. VARI
Cyphocharax spilurus DEMERARA RIVER, WISMAR   F.R. LAMONTE
Cyphocharax spilurus DEMERARA RIVER, WISMAR   R.P. VARI
Cyphocharax spilurus DEMERARA RIVER, WISMAR   R.P. VARI
Cyphocharax spilurus DEMERARA RIVER, WISMAR   R.P. VARI
Cyphocharax spilurus ESSEQUIBO RIVER, ROCKSTONE   R.P. VARI
Cyphocharax spilurus KARTABO 1924 R.P. VARI
Cyphocharax spilurus SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT; R.P. VARI
Cyphocharax spilurus SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRY CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT; R.P. VARI
Cyphocharax spilurus SOUTH SHORE CUYUNI RIVER, ABOUT 2 MILES FROM KARTABO POINT, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT; R.P. VARI
Cyphocharax spilurus UPPER MAZARUNI DISTRICT, KURUPUNG RIVER 1938 F. WOOD, F.R. LAMONTE
Dactylopterus volitans Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Decapterus punctatus Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Decapterus tabl Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Denticetopsis macilenta KARTABO    
Deuterodon iguape ARUBABO RIVER, TRIBUTARY OF KAKO-MAZARUNI 1939 F. WOOD, F.R. LAMONTE
Deuterodon mutator MEMBARU CREEK, TRIBUTARY OF UPPER MAZARUNI RIVER 1938 F. WOOD, F.R. LAMONTE
Deuterodon potaroensis UPPER MAZARUNI DISTRICT, MACREBA FALLS, KURU- PUNG RIVER   F.R. LAMONTE
Diapterus rhombeus Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Diplectrum formosum Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Doras carinatus DEMERARA RIVER, MALALI   B.A. BROWN, C.J. FERRARIS
Doras carinatus DEMERARA RIVER, MALALI 1935 R.E. SCHMIDT
Doras carinatus ESSEQUIBO RIVER, ROCKSTONE   B.A. BROWN, C.J. FERRARIS
Doras carinatus KARTABO 1924 C.W. BEEBE
Doras micropoeus ABOUT 100 m OFF KARTABO POINT, CONFLUENCE MAZARUNI AND CUYUNI RIVERS 1983 R.E. SCHMIDT
Doras micropoeus DEMERARA RIVER, MALALI   C.J. FERRARIS, B.A. BROWN
Doras micropoeus DEMERARA RIVER, MALALI   C.J. FERRARIS, B.A. BROWN
Doras micropoeus DEMERARA RIVER, MALALI TO GREAT FALLS 1934 B.A. BROWN
Doras micropoeus DEMERARA RIVER, WISMAR 1934 C.J. FERRARIS, B.A. BROWN
Eigenmannia macrops DEMERARA RIVER, SAND HILLS 1936 R. INGLE, M. BUERKLI
Eigenmannia macrops Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Eigenmannia macrops Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Eigenmannia macrops SANDBAR ON NORTH BANK CUYUNI RIVER, JUST WEST OF CAOWRIE CREEK MOUTH, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Eigenmannia virescens Brit. Guayana    
Eigenmannia virescens DEMERARA RIVER   F.R. LAMONTE
Eigenmannia virescens DEMERARA RIVER   M.H. HARNICK
Eigenmannia virescens DEMERARA RIVER, SAND HILLS 1936 R. INGLE, M. BUERKLI
Eigenmannia virescens Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Eigenmannia virescens GEORGETOWN, TRENCHES 1908 C.H. EIGENMANN
Eigenmannia virescens POTARO RIVER, TUMATUMARI   J.T. NICHOLS
Eigenmannia virescens SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Eigenmannia virescens SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRY CREEK 1983 R.E. SCHMIDT
Eigenmannia virescens UPPER MAZARUNI DISTRICT, KURUPUNG RIVER 1938 F.R. LAMONTE
Eigenmannia virescens Wismar, Brit. Guayana    
Eigenmannia virescens Wismar, Brit. Guayana 1938  
Eigenmannia virescens Wismar, Demerara-River, Brit. Guayana 1938  
Electrophorus electricus [occurrence summary]    
Electrophorus electricus SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRY CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Eleotris amblyopsis CEBO CREEK, NORTH BANK MAZARUNI RIVER, FEW HUNDRED YARDS EAST OF ST. EDWARDS CHURCH, KARTABO 1982 R.E. SCHMIDT
Eleotris amblyopsis ESSEQUIBO RIVER, ROCKSTONE 1937 F.R. LAMONTE
Eleotris amblyopsis HAULOVER, ARANA RIVER (ARUAU? - MNF) 1938 F. WOOD, F.R. LAMONTE
Eleotris amblyopsis JUNCTION MAZARUNI-CUYUNI AND ESSEQUIBO RIVERS BARTICA   F.R. LAMONTE
Eleotris amblyopsis SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Eleotris amblyopsis SANDBAR ON NORTH BANK CUYUNI RIVER, JUST WEST OF CAOWRIE CREEK MOUTH, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Eleotris amblyopsis WHYAPE CREEK, FIRST CREEK ON NORTH BANK CUYUNI RIVER, WEST OF MOUTH 1982 R.E. SCHMIDT
Engyophrys senta [occurrence summary] 1969  
Eques lanceolatus Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Erythrinus erythrinus ESSEQUIBO RIVER, ROCKSTONE 1936 F.R. LAMONTE
Erythrinus erythrinus KARTABO 1922 C.W. BEEBE; R.P. VARI
Erythrinus erythrinus KURUPUNG RIVER, GEORGETOWN   J.T. NICHOLS
Erythrinus erythrinus POTARO RIVER, TUMATUMARI   J.T. NICHOLS
Etropus crossotus [occurrence summary] 1969  
Eucinostomus argenteus Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Evorthodus lyricus GEORGETOWN   N. BORODIN
Evorthodus lyricus WHYAPE CREEK, FIRST CREEK ON NORTH BANK CUYUNI RIVER, WEST OF MOUTH 1982 R.E. SCHMIDT
Exastilithoxus fimbriatus HEADWATERS OF ESSEQUIBO RIVER, SHUDIKAR-WAU 1937 B.A. BROWN, C.J. FERRARIS
Farlowella amazonum ESSEQUIBO RIVER, ROCKSTONE   M. RETZER
Farlowella nattereri ESSEQUIBO RIVER, ABOVE ROCKSTONE   F.R. LAMONTE
Fistularia tabacaria Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Gasteropelecus maculatus Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Gasteropelecus sternicla Bergendal, Niederl. Guayana 1908  
Gasteropelecus sternicla Brit. Guayana 1966  
Gasteropelecus sternicla Commerwyne, Niederl. Guayana 1909  
Gasteropelecus sternicla Coronie, Niederl. Guayana 1910  
Gasteropelecus sternicla DEMERARA RIVER   R. INGLE, M. BUERKLI
Gasteropelecus sternicla DEMERARA RIVER, MALALI TO GREAT FALLS 1934 M. TOLEDO-PIZA
Gasteropelecus sternicla DEMERARA RIVER, WISMAR 1935 M. BUERKLI, R. INGLE
Gasteropelecus sternicla ISOLATED TIDE POOLS IN FOREST, NORTH BANK CUYUNI RIVER 1983 R.E. SCHMIDT
Gasteropelecus sternicla JUNCTION MAZARUNI-CUYUNI AND ESSEQUIBO RIVERS AT BARTICA   F.R. LAMONTE
Gasteropelecus sternicla SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Gasteropelecus sternicla SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Gastropsetta frontalis Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Geophagus brachybranchus ABOUT 100 m OFF KARTABO POINT, CONFLUENCE MAZARUNI AND CUYUNI RIVERS, MAZARUNI-POTARO DISTRICT 1983 H. LOPEZ-FERNANDEZ
Geophagus brachybranchus DEMERARA RIVER, WISMAR   H. LOPEZ-FERNANDEZ
Geophagus brachybranchus DEMERARA RIVER, WISMAR 1935 H. LOPEZ-FERNANDEZ
Geophagus brachybranchus DEMERARA RIVER, WISMAR   H. LOPEZ-FERNANDEZ
Geophagus brachybranchus DEMERARA RIVER, WISMAR   H. LOPEZ-FERNANDEZ
Geophagus brachybranchus HAIOWA FALLS, ESSEQUIBO RIVER 1937 H. LOPEZ-FERNANDEZ
Geophagus brachybranchus KARTABO POINT, BETWEEN CUYUNI RIVER MOUTH AND MAZARUNI RIVER MOUTH 1982 H. LOPEZ-FERNANDEZ
Geophagus brachybranchus KARTABO, JUNCTION MAZARUNI AND CUYUNI RIVERS, MAZARUNI-POTARO DISTRICT   H. LOPEZ-FERNANDEZ
Geophagus brachybranchus SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 H. LOPEZ-FERNANDEZ
Geophagus brachybranchus SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 H. LOPEZ-FERNANDEZ
Geophagus brachybranchus SANDBAR ON NORTH BANK CUYUNI RIVER, JUST WEST OF CAOWRIE CREEK MOUTH 1982 H. LOPEZ-FERNANDEZ
Geophagus crocatus Berbice River, about 14 air km upstream of Kwakwani at Mappa Lagoon camp, East Berbice 2010  
Geophagus surinamensis DEMERARA RIVER   M. STIASSNY,B. URBAIN,L.*
Geophagus surinamensis DEMERARA RIVER, MALALI 1935 R. INGLE, M. BUERKLI
Geophagus surinamensis DEMERARA RIVER, MALALI   R. INGLE, M. BUERKLI
Geophagus surinamensis DEMERARA RIVER, MALALI   R. INGLE, M. BUERKLI
Geophagus surinamensis DEMERARA RIVER, MALALI TO GREAT FALLS 1934 R. INGLE; B.A. BROWN
Geophagus surinamensis DEMERARA RIVER, MARI-MARI 1934 R. INGLE, M. BUERKLI
Geophagus surinamensis DEMERARA RIVER, WISMAR 1935 J.W. ATZ
Geophagus surinamensis DEMERARA RIVER, WISMAR   M.L.J.STIASSNY,B.K.URBAIN
Geophagus surinamensis DEMERARA RIVER, WISMAR 1935 R. INGLE, M. BUERKLI
Geophagus surinamensis DEMERARA RIVER, WISMAR   R. INGLE, M. BUERKLI
Geophagus surinamensis DEMERARA RIVER, WISMAR 1935 R. INGLE, M. BUERKLI
Geophagus surinamensis DEMERARA RIVER, WISMAR 1930 R. INGLE, M. BUERKLI
Geophagus surinamensis ESSEQUIBO RIVER, ROCKSTONE   R. INGLE, M. BUERKLI
Geophagus surinamensis MALALI   M. BUERKLI, R. INGLE
Geophagus surinamensis MALALI   R. INGLE, M. BUERKLI
Geophagus surinamensis SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRY CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Geophagus surinamensis SANDBAR ON NORTH BANK CUYUNI RIVER, JUST WEST OF CAOWRIE CREEK MOUTH, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Gnathocharax steindachneri ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Gnathocharax steindachneri Rockstone, Essequibo-River, Brit. Guayana 1933 J. Gery rev. 1961
Goeldiella eques DEMERARA RIVER, MALALI 1935  
Goeldiella eques ESSEQUIBO RIVER, ABOVE ROCKSTONE   F.R. LAMONTE
Guianacara dacrya Potaro-Siparuni (Region 8), Water Dog Falls, Burro Burro River, Essequibo Drainage 1997  
Guianacara geayi ESSEQUIBO RIVER, ROCKSTONE 1937 F.R. LAMONTE
Guianacara geayi KARTABO POINT, BETWEEN CUYUNI RIVER MOUTH AND MAZARUNI RIVER MOUTH 1982 R.E. SCHMIDT
Guianacara sphenozona BLACKWATER CREEK, ESSEQUIBO RIVER HEADWATERS 1938 H. LOPEZ-FERNANDEZ
Gymnocorymbus thayeri DEMERARA RIVER    
Gymnocorymbus thayeri JUNCTION MAZARUNI-CUYUNI AND ESSEQUIBO RIVERS BARTICA   F.R. LAMONTE
Gymnocorymbus thayeri SANTA ROSA, AMACURO RIVER 1938 F.R. LAMONTE
Gymnocorymbus thayeri YARAKITA RIVER 1937 F.R. LAMONTE
Gymnorhamphichthys hypostomus DEMERARA RIVER   F. WOOD, F.R. LAMONTE
Gymnorhamphichthys hypostomus DEMERARA RIVER   R.P. VARI
Gymnorhamphichthys hypostomus ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Gymnorhamphichthys hypostomus ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Gymnorhamphichthys hypostomus ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Gymnothorax ocellatus Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Gymnotus carapo ARUATAIMA, TWO CREEKS BELOW CATARACT 1908 C.H. EIGENMANN
Gymnotus carapo Bergendaal, obere Suriname, Niederl. Guayana 1908  
Gymnotus carapo MAZARUNI RIVER, KAMAKUSA   J.T. NICHOLS
Gymnotus carapo Rockstone, Essequibo-River, Brit. Guayana 1938  
Gymnotus carapo RUPUNUNI RIVER, WICHABAI (J. MELVILLE'S RANCH), 10 MILES NORTH OF DADANAWA 1938 A. FERNANDEZ Y.
Gymnotus carapo UPPER RIVER KAMERANG, 20 MILES ABOVE PARUIMA 1938 F.R. LAMONTE
Gymnura micrura GUYANA OFF MOUTH ESQUIBO, NEW AMSTERDAM R    
Haemomaster venezuelae CEBO CREEK, NORTH BANK MAZARUNI RIVER, EAST OF ST. EDWARDS CHURCH, KARTABO 1982 R.E. SCHMIDT
Haemomaster venezuelae KARTABO POINT, BETWEEN CUYUNI RIVER MOUTH AND MAZARUNI RIVER MOUTH 1982 R.E. SCHMIDT
Haemomaster venezuelae SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Haemulon aurolineatum Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Haemulon steindachneri Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Haemulopsis corvinaeformis Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Halieutichthys aculeatus Guyanan Continental Shelf at 36 Fathoms.   D. Nowosad
Harengula jaguana GUYANA OFF MOUTH ESQUIBO, NEW AMSTERDAM R    
Helogenes marmoratus DEMERARA RIVER, KAMUNI CREEK 1936 B.A. BROWN
Helogenes marmoratus ESSEQUIBO RIVER, ROCKSTONE    
Helogenes marmoratus KORA-KORA CREEK    
Helogenes marmoratus KURUPUNG RIVER, GEORGETOWN   J.T. NICHOLS
Helogenes marmoratus POTARO RIVER AT ENTRANCE OF CHENAPOWU RIVER, HOLMIA 1908 C.H. EIGENMANN
Helogenes marmoratus POTARO RIVER, TUMATUMARI   J.T. NICHOLS
Hemiancistrus megacephalus ESSEQUIBO RIVER, ABOVE ROCKSTONE   F.R. LAMONTE
Hemigrammus analis Rockstone, Essequibo-River, Brit. Guayana 1933  
Hemigrammus bellottii ARUBABO RIVER, TRIBUTARY OF KAKO-MAZARUNI 1939 F. WOOD, F.R. LAMONTE
Hemigrammus bellottii CEBO CREEK, NORTH BANK MAZARUNI RIVER, FEW HUNDRED YARDS EAST OF ST. EDWARDS CHURCH, KARTABO 1982 R.E. SCHMIDT
Hemigrammus bellottii SMALL STREAM ON FOREST ROAD FROM SKULL POINT, NORTH BANK CUYUNI RIVER 1983 R.E. SCHMIDT
Hemigrammus cylindricus DEMERARA RIVER, MALALI 1935 R.INGLE, M. BUERKLI
Hemigrammus cylindricus KORA-KORA CREEK    
Hemigrammus cylindricus KORA-KORA CREEK   F.R. LAMONTE
Hemigrammus erythrozonus ERUKIN CREEK 1908 C.H. EIGENMANN
Hemigrammus gracilis BERBICE RIVER   R.P. VARI
Hemigrammus gracilis DEMERARA RIVER, MALALI 1934 R.P. VARI
Hemigrammus gracilis ESSEQUIBO RIVER, ROCKSTONE   R.P. VARI
Hemigrammus gracilis MALALI   R.P. VARI
Hemigrammus gracilis ROCKSTONE 1934 R.P. VARI
Hemigrammus gracilis ROCKSTONE   R.P. VARI
Hemigrammus gracilis WISMAR   R.P. VARI
Hemigrammus iota ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Hemigrammus ocellifer DEMERARA RIVER, MALALI 1935  
Hemigrammus ocellifer DEMERARA RIVER, MALALI 1935 A.S. PINKUS
Hemigrammus ocellifer ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Hemigrammus ocellifer WISMAR 1935  
Hemigrammus orthus SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Hemigrammus rodwayi AMACURO RIVER, SANTA ROSA 1938 F.R. LAMONTE
Hemigrammus rodwayi KORA-KORA CREEK   F.R. LAMONTE
Hemigrammus rodwayi LAMAHA CANAL, EAST OF DEMERARA RIVER   R.P. VARI
Hemigrammus rodwayi Lamaha-Kanäle b. Georgetown, Brit. Guayana   J. Gery rev. 1961
Hemigrammus rodwayi YARAKITA RIVER 1937 F.R. LAMONTE
Hemigrammus stictus BERBICE RIVER   R.P. VARI
Hemigrammus stictus BERBICE RIVER   R.P. VARI
Hemigrammus stictus DEMERARA RIVER, GEORGETOWN   F.R. LAMONTE
Hemigrammus stictus DEMERARA RIVER, KAMUNI CREEK   R.P. VARI
Hemigrammus stictus DEMERARA RIVER, KORA-KORA CREEK 1935  
Hemigrammus stictus DEMERARA RIVER, KORA-KORA CREEK 1935  
Hemigrammus stictus DEMERARA RIVER, MALALI 1935 R. INGLE, M. BUERKLI
Hemigrammus stictus ESSEQUIBO RIVER, ROCKSTONE   R. INGLE, M. BUERKLI
Hemigrammus stictus KORA KORA CREEK   A.S. PINKUS
Hemigrammus stictus KORA-KORA CREEK   F.R. LAMONTE
Hemigrammus stictus Lamaha-Kanale, Georgetown, Brit. Guayana 1933 J. Gery rev. 1961
Hemigrammus stictus ROCKSTONE   R.P. VARI
Hemigrammus stictus RUPUNUNI RIVER, SAVANNAH POND NEAR DADANAWA 1938 D. MARCY
Hemigrammus unilineatus ABANDONED FLOODED STONE QUARRY BEHIND GIDEON'S STORE, NORTH BANK MAZARUNI RIVER NEAR KARTABO, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Hemigrammus unilineatus ABANDONED QUARRY POOLS AND BARRACARA CREEK, EAST BANK MAZARUNI RIVER 1983 R.E. SCHMIDT
Hemigrammus unilineatus ARUAU RIVER, TRIBUTARY OF BARAMA NEAR ITS MOUTH IN THE WAINI 1937 F.R. LAMONTE
Hemigrammus unilineatus BARIMA RIVER 1908 C.H. EIGENMANN
Hemigrammus unilineatus DEMERARA RIVER, MALALI TO GREAT FALLS 1934 R.P. VARI
Hemigrammus unilineatus DEMERARA RIVER, MALALI TO GREAT FALLS 1934 R.P. VARI
Hemigrammus unilineatus DEMERARA RIVER, WISMAR   F.R. LAMONTE
Hemigrammus unilineatus ISOLATED TIDE POOLS IN FOREST, NORTH BANK CUYUNI RIVER 1983 R.E. SCHMIDT
Hemigrammus unilineatus LITTLE TAKUTU RIVER AND TRIBUTARIES, MAZARAHALLY TAKUTU LUMBER CAMP, WEST SHORE MAZARUNI RIVER 1983 R.E. SCHMIDT
Hemigrammus unilineatus YARAKITA RIVER 1937 F.R. LAMONTE
Hemiodontichthys acipenserinus ESSEQUIBO RIVER, ABOVE ROCKSTONE   F.R. LAMONTE
Hemiodontichthys acipenserinus ESSEQUIBO RIVER, ROCKSTONE   B.A. BROWN
Hemiodontichthys acipenserinus ESSEQUIBO RIVER, ROCKSTONE 1938 F.R. LAMONTE
Hemiodontichthys acipenserinus ESSEQUIBO RIVER, ROCKSTONE 1937 F.R. LAMONTE
Hemiodus gracilis ESSEQUIBO RIVER, ABOVE ROCKSTONE   F.R. LAMONTE
Hemiodus quadrimaculatus BARRACARA CREEK ON EAST BANK MAZARUNI RIVER MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Hemiodus quadrimaculatus CEBO CREEK, NORTH BANK MAZARUNI RIVER, FEW HUNDRED YARDS EAST OF ST. EDWARDS CHURCH, KARTABO 1982 R.E. SCHMIDT
Hemiodus quadrimaculatus CEBO CREEK, WEST BANK MAZARUNI RIVER, EAST OF ST. EDWARDS CHURCH, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Hemiodus quadrimaculatus ESSEQUIBO POND, ROCKSTONE 1937 F.R. LAMONTE
Hemiodus quadrimaculatus ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Hemiodus quadrimaculatus ESSEQUIBO RIVER, ROCKSTONE 1938 F.R. LAMONTE
Hemiodus quadrimaculatus ESSEQUIBO RIVER, ROCKSTONE   M. TOLEDO-PIZA
Hemiodus quadrimaculatus JUNCTION MAZARUNI-CUYUNI AND ESSEQUIBO RIVERS BARTICA   R.P. VARI
Hemiodus quadrimaculatus JUNCTION OF MAZARUNI-CUYUNI AND ESSEQUIBO RIVERS, BARTICA 1935 A.S. PINKUS
Hemiodus quadrimaculatus JUNCTION OF MAZARUNI-CUYUNI AND ESSEQUIBO RIVERS, BARTICA 1935 F.R. LAMONTE
Hemiodus quadrimaculatus JUNCTION OF MAZARUNI-CUYUNI AND ESSEQUIBO RIVERS, BARTICA 1935 R.P. VARI
Hemiodus quadrimaculatus KARTABO POINT, CONFLUENCE OF MAZARUNI AND CUYUNI RIVERS 1983 R.E. SCHMIDT
Hemiodus quadrimaculatus KARTABO, JUNCTION MAZARUNI AND CUYUNI RIVERS, MARARUNI-POTARO DISTRICT   R.P. VARI
Hemiodus quadrimaculatus SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRY CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Hemiodus quadrimaculatus SECOND ISLAND UPRIVER FROM KARTABO POINT, MAZARUNI RIVER 1983 R.E. SCHMIDT
Hemiodus quadrimaculatus TRIBUTARY TO UPPER ESSEQUIBO RIVER, ONORA ABOVE BIG FALLS (UNOROWO RIVER) 1937 A. FERNANDEZ Y.
Hemiodus semitaeniatus DEMERARA RIVER, MALALI 1934 R.P. VARI
Hemiodus semitaeniatus DEMERARA RIVER, MALALI 1935 R.P. VARI
Hemiodus semitaeniatus DEMERARA RIVER, MALALI   R.P. VARI
Hemiodus semitaeniatus DEMERARA RIVER, WISMAR   R.P. VARI
Hemiodus semitaeniatus DEMERARA RIVER, WISMAR 1933 R.P. VARI
Hemiodus semitaeniatus ESSEQUIBO POND, ROCKSTONE 1937 F.R. LAMONTE
Hemiodus semitaeniatus JUNCTION MAZARUNI-CUYUNI AND ESSEQUIBO RIVERS BARTICA   F.R. LAMONTE
Hemiodus semitaeniatus ROCKSTONE   F. WOOD, F.R. LAMONTE
Hemiodus unimaculatus DEMERARA RIVER AND AFFLUENT TRIBUTARY CREEKS, BELOW WISMAR 1908 C.H. EIGENMANN
Hemiodus unimaculatus DEMERARA RIVER, MALALI ? 1934 R.P. VARI
Hemiodus unimaculatus DEMERARA RIVER, WISMAR   F.R. LAMONTE
Hemiodus unimaculatus ESSEQUIBO RIVER, ROCKSTONE   R.P. VARI
Hemiodus unimaculatus ESSEQUIBO RIVER, ROCKSTONE   R.P. VARI
Hemiodus unimaculatus JUNCTION MAZARUNI-CUYUNI AND ESSEQUIBO RIVERS BARTICA    
Hemiodus unimaculatus WISMAR 1935 A.S. PINKUS
Hemisorubim platyrhynchos Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Hemisorubim platyrhynchos KARTABO 1922 C.W. BEEBE
Henonemus taxistigmus Rupununi R., Guyana, 2°-3°N, 50°20'W.    
Heros severus ESSEQUIBO RIVER, ROCKSTONE 1937 F.R. LAMONTE
Heros severus ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Heterocharax macrolepis ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Holocentrus adscensionis Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Hoplerythrinus unitaeniatus ESSEQUIBO POND, ROCKSTONE 1937 F.R. LAMONTE
Hoplerythrinus unitaeniatus GEORGETOWN   R.P. VARI
Hoplerythrinus unitaeniatus GEORGETOWN, TRENCHES 1908 C.H. EIGENMANN
Hoplerythrinus unitaeniatus KARTABO 1924 R.P. VARI
Hoplerythrinus unitaeniatus KARTABO, JUNCTION MAZARUNI AND CUYUNI RIVERS, MARARUNI-POTARO DISTRICT   R.P. VARI
Hoplerythrinus unitaeniatus UPPER MAZARUNI DISTRICT, KURUPUNG RIVER 1938 F.R. LAMONTE
Hoplias macrophthalmus CEBO CREEK, NORTH BANK MAZARUNI RIVER, FEW HUNDRED YARDS EAST OF ST. EDWARDS CHURCH, KARTABO 1982 R.E. SCHMIDT
Hoplias malabaricus BLACKWATER CREEK, ESSEQUIBO RIVER HEADWATERS 1938 M. TOLEDO-PIZA
Hoplias malabaricus DEMERARA RIVER, WISMAR   F.R. LAMONTE
Hoplias malabaricus ESSEQUIBO POND, ROCKSTONE 1937 F.R. LAMONTE
Hoplias malabaricus ESSEQUIBO POND, ROCKSTONE 1937 F.R. LAMONTE
Hoplias malabaricus GEORGETOWN    
Hoplias malabaricus GEORGETOWN DEMERARA RIVER 1973  
Hoplias malabaricus GEORGETOWN TRENCHES   R.P. VARI
Hoplias malabaricus KARTABO 1919 C.W. BEEBE
Hoplias malabaricus POTARO RIVER, TUMATUMARI   J.T. NICHOLS
Hoplias malabaricus POTARO RIVER, TUMATUMARI   J.T. NICHOLS
Hoplias malabaricus POTARO RIVER, TUMATUMARI   J.T. NICHOLS
Hoplias malabaricus ROCK QUARRY BEHIND GIDEON'S STORE, WEST BANK MAZARUNI RIVER, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Hoplias malabaricus RUPUNUNI RIVER, SAVANNAH POND NEAR DADANAWA 1938 D. MARCY
Hoplias malabaricus SANTA ROSA, AMACURO RIVER 1938 F.R. LAMONTE
Hoplosternum littorale GEORGETOWN DEMERARA RIVER 1973  
Hoplosternum littorale NEAR GEORGETOWN   M.N. FEINBERG
Hoplosternum littorale POTARO RIVER, TUMATUMARI   M.N. FEINBERG
Hydrolycus armatus Sandbars in vicinity of Maipuri campsite, 4°34'N, 58°35'W, Essequibo R., Guyana.    
Hypancistrus margaritatus Takutu River ca. 2.75 km W Saint Ignatius, Rio Branco, Rio Negro drainage, Amazon Basin, Rupununi (Region 9) 2002  
Hypanus americanus Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Hyphessobrycon eos ABANDONED FLOODED STONE QUARRY BEHIND GIDEON'S STORE, NORTH BANK MAZARUNI RIVER NEAR KARTABO, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Hyphessobrycon eos DEMERARA RIVER   R.P. VARI
Hyphessobrycon eos DEMERARA RIVER, MALALI TO GREAT FALLS 1934 R.P. VARI
Hyphessobrycon eos ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Hyphessobrycon eos FOREST STREAM EAST OF BATAVIA LANDING-GUYANA SAWMILLS, SOUTH BANK CUYUNI RIVER 1982 R.E. SCHMIDT
Hyphessobrycon eos ROCK QUARRY BEHIND GIDEON'S STORE, WEST BANK MAZARUNI RIVER, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Hyphessobrycon eos ROCKSTONE 1934 R.P. VARI
Hyphessobrycon gracilior WHYAPE CREEK, FIRST CREEK ON NORTH BANK CUYUNI RIVER, WEST OF MOUTH 1982 R.E. SCHMIDT
Hyphessobrycon minimus DEMERARA RIVER, WISMAR   F.R. LAMONTE
Hyphessobrycon minimus Rockstone, Essequibo-River, Brit. Guayana   J. Gery rev. 1961
Hyphessobrycon minimus RUPUNUNI RIVER, SAVANNAH POND NEAR DADANAWA 1938 D. MARCY
Hyphessobrycon minimus SANDBAR ON NORTH BANK CUYUNI RIVER, JUST WEST OF CAOWRIE CREEK MOUTH, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Hyphessobrycon minimus SMALL STREAM ON FOREST ROAD FROM SKULL POINT, NORTH BANK CUYUNI RIVER 1983 R.E. SCHMIDT
Hyphessobrycon minor AMACURO RIVER, SANTA ROSA 1938 F.R. LAMONTE
Hyphessobrycon minor DEMERARA RIVER, MALALI 1935 R. INGLE, M. BUERKLI
Hyphessobrycon minor DEMERARA RIVER, WISMAR   R.P. VARI
Hyphessobrycon minor ESSEQUIBO RIVER, ROCKSTONE   A.S. PINKUS
Hyphessobrycon minor LAMAHA CANAL, EAST OF DEMERARA RIVER   R.P. VARI
Hyphessobrycon minor RUPUNUNI RIVER, SAVANNAH POND NEAR DADANAWA 1938 D. MARCY
Hyphessobrycon minor UPPER MAZARUNI DISTRICT, KURUPUNG RIVER 1938 F.R. LAMONTE
Hyphessobrycon minor WISMAR   R.P. VARI
Hyphessobrycon minor YARAKITA RIVER 1937 F.R. LAMONTE
Hyphessobrycon minor YARAKITA RIVER 1937 F.R. LAMONTE
Hyphessobrycon minor YARAKITA RIVER 1937 F.R. LAMONTE
Hyphessobrycon rosaceus BERBICE RIVER   R.P. VARI
Hyphessobrycon rosaceus DEMERARA RIVER    
Hyphessobrycon rosaceus DEMERARA RIVER   R.P. VARI
Hyphessobrycon rosaceus DEMERARA RIVER, MALALI    
Hyphessobrycon rosaceus DEMERARA RIVER, MALALI 1935  
Hyphessobrycon rosaceus DEMERARA RIVER, MALALI TO GREAT FALLS 1934 R.P. VARI
Hyphessobrycon rosaceus Gluck I., Essequibo R., Guyana (a river island at ca 6°00' to 6°05'N, 58°36'W).    
Hyphessobrycon rosaceus LAMAHA CANAL, EAST OF DEMERARA RIVER   R.P. VARI
Hyphessobrycon rosaceus MALALI    
Hyphessobrycon rosaceus MARI-MARI RIVER, MALALI 1935 F.R. LAMONTE
Hyphessobrycon rosaceus ROCKSTONE   R.P. VARI
Hyphessobrycon rosaceus Rockstone, Essequibo-River, Brit. Guayana   J. Gery rev. 1961
Hyphessobrycon rosaceus Rockstone, Essequibo-River, Brit. Guayana 1933  
Hyphessobrycon simulatus FOREST STREAM EAST OF BATAVIA LANDING-GUYANA SAWMILLS, SOUTH BANK CUYUNI RIVER 1982 R.E. SCHMIDT
Hyphessobrycon simulatus ROCK QUARRY BEHIND GIDEON'S STORE, WEST BANK MAZARUNI RIVER, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Hyphessobrycon simulatus SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Hypophthalmus edentatus ABOUT 100 m OFF KARTABO POINT, CONFLUENCE MAZARUNI AND CUYUNI RIVERS, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Hypophthalmus edentatus POTARO RIVER, TUMATUMARI   J.T. NICHOLS
Hypopomus artedi CEBO CREEK, NORTH BANK MAZARUNI RIVER, FEW HUNDRED YARDS EAST OF ST. EDWARDS CHURCH, KARTABO 1982 R.E. SCHMIDT
Hypopomus artedi DEMERARA RIVER, SAND HILLS 1936 F.R. LAMONTE
Hypopomus artedi Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Hypoptopoma thoracatum ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Hypopygus lepturus DEMERARA RIVER, WISMAR   W. FINK
Hypopygus lepturus KORA-KORA CREEK 1935 W. FINK
Hypopygus lepturus MALALI   W. FINK
Hypopygus lepturus MARI-MARI RIVER, MALALI   W. FINK
Hypopygus lepturus MARI-MARI RIVER, MALALI   W. FINK
Hypopygus lepturus MARI-MARI RIVER, MALALI   W. FINK
Hyporhamphus roberti ESSEQUIBO RIVER   B.B. COLLETTE
Hyporthodus flavolimbatus Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Hyporthodus niveatus Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Hypostomus hemiurus DEMERARA RIVER   J.T. NICHOLS
Hypostomus hemiurus DEMERARA RIVER, WISMAR   F.R. LAMONTE
Hypostomus hemiurus ESSEQUIBO POND, ROCKSTONE 1937 F.R. LAMONTE
Hypostomus hemiurus POTARO RIVER, TUMATUMARI   J.T. NICHOLS
Hypostomus plecostomus ABOUT 100 m OFF KARTABO POINT, CONFLUENCE MAZARUNI AND CUYUNI RIVERS 1983 R.E. SCHMIDT
Hypostomus plecostomus DEMERARA RIVER, WISMAR   C.J. FERRARIS, B.A. BROWN
Hypostomus plecostomus Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Hypostomus plecostomus SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Hypostomus plecostomus SANDBAR ON NORTH BANK CUYUNI RIVER, JUST WEST OF CAOWRIE CREEK MOUTH 1982 R.E. SCHMIDT
Hypostomus plecostomus SOUTH SHORE CUYUNI RIVER, ABOUT 2 MILES FROM KARTABO POINT, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Hypostomus watwata ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Iguanodectes spilurus ARUAU RIVER, TRIBUTARY OF BARAMA NEAR ITS MOUTH IN THE WAINI 1937 R.P. VARI
Iguanodectes spilurus ESSEQUIBO POND, ROCKSTONE 1937 R.P. VARI
Iguanodectes spilurus ESSEQUIBO RIVER, ABOVE ROCKSTONE   F.R. LAMONTE
Iguanodectes spilurus ESSEQUIBO RIVER, ROCKSTONE   R.P. VARI
Iguanodectes spilurus ESSEQUIBO RIVER, ROCKSTONE   R.P. VARI
Iguanodectes spilurus ESSEQUIBO RIVER, ROCKSTONE 1937 R.P. VARI
Iguanodectes spilurus MAZARUNI RIVER, KAMAKUSA   R.P. VARI
Iguanodectes spilurus ROCKSTONE   A.S. PINKUS
Iguanodectes spilurus UPPER MAZARUNI DISTRICT, MACKREBA FALLS, KURUPUNG RIVER 1939 R.P. VARI
Isogomphodon oxyrhynchus KITTY JETTY 1961 R.H. LOWE, G. DINGERKUS
Jupiaba abramoides ABANDONED FLOODED STONE QUARRY BEHIND GIDEON'S STORE, NORTH BANK MAZARUNI RIVER NEAR KARTABO, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Jupiaba abramoides ABANDONED QUARRY POOLS AND BARRACARA CREEK, EAST BANK MAZARUNI RIVER 1983 R.E. SCHMIDT
Jupiaba abramoides BARRACARA CREEK ON EAST BANK MAZARUNI RIVER MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Jupiaba abramoides CEBO CREEK, NORTH BANK MAZARUNI RIVER, FEW HUNDRED YARDS EAST OF ST. EDWARDS CHURCH, KARTABO 1982 R.E. SCHMIDT
Jupiaba abramoides CEBO CREEK, WEST BANK MAZARUNI RIVER, EAST OF ST. EDWARDS CHURCH, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Jupiaba abramoides DEMERARA RIVER   F.R. LAMONTE
Jupiaba abramoides DEMERARA RIVER, WISMAR   V. GARUTTI
Jupiaba abramoides ISOLATED TIDE POOLS IN FOREST, NORTH BANK CUYUNI RIVER 1983 R.E. SCHMIDT
Jupiaba abramoides KARTABO POINT, CONFLUENCE OF MAZARUNI AND CUYUNI RIVERS 1983 R.E. SCHMIDT
Jupiaba abramoides KARTABO, JUNCTION MAZARUNI AND CUYUNI RIVERS, MARARUNI-POTARO DISTRICT   C.W. BEEBE
Jupiaba abramoides KURUPUNG RIVER, GEORGETOWN   J.T. NICHOLS
Jupiaba abramoides MAZARUNI RIVER, KAMAKUSA    
Jupiaba abramoides POTARO RIVER, TUMATUMARI   J.T. NICHOLS
Jupiaba abramoides POTARO RIVER, TUMATUMARI   J.T. NICHOLS
Jupiaba abramoides ROCK QUARRY BEHIND GIDEON'S STORE, WEST BANK MAZARUNI RIVER, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Jupiaba abramoides SECOND ISLAND UPRIVER FROM KARTABO POINT, MAZARUNI RIVER 1983 R.E. SCHMIDT
Jupiaba essequibensis DEMERARA RIVER, MALALI 1935  
Jupiaba essequibensis DEMERARA RIVER, WISMAR   F.R. LAMONTE
Jupiaba essequibensis ROCK QUARRY BEHIND GIDEON'S STORE, WEST BANK MAZARUNI RIVER, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Jupiaba essequibensis ROCKSTONE   R.P. VARI
Jupiaba essequibensis SANDBAR ON NORTH BANK CUYUNI RIVER, JUST WEST OF CAOWRIE CREEK MOUTH, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Jupiaba mucronata ABANDONED QUARRY POOLS AND BARRACARA CREEK, EAST BANK MAZARUNI RIVER 1983 R.E. SCHMIDT
Jupiaba pinnata ARUBABO RIVER, TRIBUTARY OF KAKO-MAZARUNI 1939 F. WOOD, F.R. LAMONTE
Jupiaba pinnata UPPER MAZARUNI DISTRICT, KURUPUNG RIVER 1938 F.R. LAMONTE
Jupiaba polylepis ABANDONED FLOODED STONE QUARRY BEHIND GIDEON'S STORE, NORTH BANK MAZARUNI RIVER NEAR KARTABO, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Jupiaba polylepis DEMERARA RIVER, WISMAR   F.R. LAMONTE
Jupiaba polylepis ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Jupiaba polylepis ESSEQUIBO RIVER, ROCKSTONE 1934 R.P. VARI
Jupiaba polylepis MAZARUNI RIVER, KAMAKUSA   J.T. NICHOLS
Jupiaba polylepis NO FURTHER DATA 1922  
Jupiaba polylepis Rockstone, Essequibo-River, Brit. Guayana   J. Gery rev. 1961
Jupiaba polylepis SAMBITO FALLS, AMACURO RIVER   F.R. LAMONTE
Jupiaba polylepis UPPER MAZARUNI DISTRICT, KURUPUNG RIVER 1938 F. WOOD, F.R. LAMONTE
Jupiaba polylepis UPPER MAZARUNI DISTRICT, KURUPUNG RIVER 1922  
Knodus meridae KARTABO, JUNCTION MAZARUNI AND CUYUNI RIVERS, MAZARUNI - POTARO DISTRICT   A.E. AQUINO
Kosswigichthys asquamatus MARI-MARI RIVER, MALALI    
Krobia petitella East Berbice River, just upstream of Kwakwani, 2010  
Laemolyta taeniata ESSEQUIBO POND, ROCKSTONE 1937 F.R. LAMONTE
Laemolyta taeniata ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Laemolyta taeniata ESSEQUIBO RIVER, ROCKSTONE 1936 F.R. LAMONTE
Lagocephalus laevigatus Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Laimosemion breviceps MARI-MARI RIVER, MALALI 1934 F.R. LAMONTE
Laimosemion cladophorus Inner Guyana, 4°85'N, 53°30'W.    
Laimosemion mabura Guyana: stream on the main track to Mahdia at the 10 miles point from Mabura Hill, Essequibo River drainage. 2012  
Laimosemion paryagi Upper Mazaruni District, upper Mazaruni river about 7 miles downstream from Kamarang, a little creek about 15 minutes walk on a bush trail in eastern direction starting at the right bank near a rapid locally called 'Sand Landing'. 1995  
Laimosemion torrenticola Little creek at right bank of the Kamarang R., upper Mazaruni Reserve, near Kamarang village, 05°50'20"N, 60°30'58"W, Guyana.    
Lepidosiren paradoxa YARAKITA RIVER 1937 R.E. SCHMIDT
Lepophidium pheromystax Off Guiana coast, 7°55'N, 57°25'W, Oregon sta. 2001, 50 fm.    
Leporinus agassizii MCTURK'S RANCH, KARENAMBO ON RUPUNUNI RIVER JUST BELOW YUPUKARRI, FROM SUNKEN BOAT   A. FERNANDEZ Y.
Leporinus alternus CEBO CREEK, WEST BANK MAZARUNI RIVER, EAST OF ST. EDWARDS CHURCH, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Leporinus alternus DEMERARA RIVER   F.R. LAMONTE
Leporinus alternus TRIBUTARY TO UPPER ESSEQUIBO RIVER, ONORA ABOVE BIG FALLS (UNOROWO RIVER) 1937 A. FERNANDEZ Y.
Leporinus alternus TRIBUTARY TO UPPER ESSEQUIBO RIVER, ONORA ABOVE BIG FALLS (UNOROWO RIVER) 1937 A. FERNANDEZ Y.
Leporinus alternus TRIBUTARY TO UPPER ESSEQUIBO RIVER, ONORA ABOVE CATARACT (UNOROWO RIVER) 1937 A. FERNANDEZ Y.
Leporinus arcus ABANDONED QUARRY POOLS AND BARRACARA CREEK, EAST BANK MAZARUNI RIVER 1983 R.E. SCHMIDT
Leporinus arcus BARRACARA CREEK ON EAST BANK MAZARUNI RIVER MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Leporinus arcus ESSEQUIBO RIVER, ROCKSTONE   R.P. VARI
Leporinus arcus KARTABO, BETWEEN CUYUNI RIVER MOUTH AND MAZARUNI RIVER MOUTH 1922  
Leporinus desmotes Rupununi R., Guyana, ca. 2°-3°N, 50°20'W.    
Leporinus fasciatus CRAB FALLS 1908 C.H. EIGENMANN
Leporinus fasciatus DEMERARA RIVER, WISMAR 1937 F.R. LAMONTE
Leporinus fasciatus DEMERARA RIVER, WISMAR 1935 R.P. VARI
Leporinus fasciatus DEMERARA RIVER, WISMAR   R.P. VARI
Leporinus fasciatus JUNCTION MAZARUNI-CUYUNI AND ESSEQUIBO RIVERS AT BARTICA   F.R. LAMONTE
Leporinus fasciatus KARTABO   C.W. BEEBE
Leporinus friderici ABOUT 100 m OFF KARTABO POINT, CONFLUENCE MAZARUNI AND CUYUNI RIVERS, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Leporinus friderici DEMERARA RIVER   R.P. VARI
Leporinus friderici DEMERARA RIVER, MALALI 1935 R.P. VARI
Leporinus friderici DEMERARA RIVER, WISMAR   F.R. LAMONTE
Leporinus friderici DEMERARA RIVER, WISMAR   R.P. VARI
Leporinus friderici DEMERARA RIVER, WISMAR   R.P. VARI
Leporinus friderici DEMERARA RIVER, WISMAR   R.P. VARI
Leporinus friderici DEMERARA RIVER, WISMAR 1935 R.P. VARI
Leporinus friderici Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Leporinus friderici ESSEQUIBO RIVER, ROCKSTONE 1937 F.R. LAMONTE
Leporinus friderici ESSEQUIBO RIVER, ROCKSTONE   R.P. VARI
Leporinus friderici ISOLATED TIDE POOLS IN FOREST, NORTH BANK CUYUNI RIVER 1983 R.E. SCHMIDT
Leporinus friderici MATOPE, CUYUNI RIVER 1924 C.W. BEEBE
Leporinus friderici NO FURTHER DATA    
Leporinus friderici POTARO RIVER, TUMATUMARI   J.T. NICHOLS
Leporinus friderici ROCK QUARRY BEHIND GIDEON'S STORE, WEST BANK MAZARUNI RIVER, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Leporinus friderici RUPUNUNI RIVER, SAVANNAH POND NEAR DADANAWA 1938 D. MARCY
Leporinus friderici RUPUNUNI RIVER, SAVANNAH POND, DADANAWA 1938 A. FERNANDEZ Y.
Leporinus friderici WISMAR   R.P. VARI
Leporinus maculatus BLACKWATER CREEK, ESSEQUIBO RIVER HEADWATERS 1938 A. FERNANDEZ Y.
Leporinus maculatus CUYUNI RIVER HALFWAY BETWEEN LANDING AND MOUTH IN ESSEQUIBO, NEAR NABIE WAN (RIVER) 1937 A. FERNANDEZ Y.
Leporinus maculatus ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Leporinus maculatus ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Leporinus maculatus FOREST STREAM EAST OF BATAVIA LANDING-GUYANA SAWMILLS, SOUTH BANK CUYUNI RIVER 1982 R.E. SCHMIDT
Leporinus maculatus HEADWATERS OF ESSEQUIBO RIVER BETWEEN MARUDI RIVER AND KUYUWINI RIVER MOUTH 1937 A. FERNANDEZ Y.
Leporinus maculatus HEADWATERS OF ESSEQUIBO RIVER, BETWEEN MARUDI RIVER AND KUYUWINI RIVER MOUTH, JUST ABOVE MOUTH 1937 J.C. GARAVELLO
Leporinus maculatus POTARO RIVER, TUMATUMARI   J.T. NICHOLS
Leporinus maculatus TRIBUTARY TO UPPER ESSEQUIBO RIVER, ONORA ABOVE BIG FALLS (UNOROWO RIVER) 1937 A. FERNANDEZ Y.
Leporinus maculatus TRIBUTARY TO UPPER ESSEQUIBO RIVER, ONORA ABOVE BIG FALLS (UNOROWO RIVER) 1937 A. FERNANDEZ Y.
Leporinus nigrotaeniatus ABOUT 100 m OFF KARTABO POINT, CONFLUENCE MAZARUNI AND CUYUNI RIVERS, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Leporinus nigrotaeniatus BATAVIA LANDING-GUYANA SAWMILLS, SOUTH BANK CUYUNI RIVER 1982 R.E. SCHMIDT
Leporinus nigrotaeniatus CEBO CREEK, NORTH BANK MAZARUNI RIVER, FEW HUNDRED YARDS EAST OF ST. EDWARDS CHURCH, KARTABO 1982 R.E. SCHMIDT
Leporinus nigrotaeniatus CEBO CREEK, WEST BANK MAZARUNI RIVER, EAST OF ST. EDWARDS CHURCH, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Leporinus nigrotaeniatus ESSEQUIBO RIVER HEADWATERS, JUST BELOW BLACK- WATER CREEK 1938 A. FERNANDEZ Y.
Leporinus nigrotaeniatus JUNCTION OF MAZARUNI-CUYUNI AND ESSEQUIBO RIVERS, BARTICA 1935 R.P. VARI
Leporinus nigrotaeniatus JUNCTION OF MAZARUNI-CUYUNI AND ESSEQUIBO RIVERS, BARTICA 1935 R.P. VARI
Leporinus nigrotaeniatus KARTABO 1922 C.W. BEEBE
Leporinus nigrotaeniatus KARTABO POINT, BETWEEN CUYUNI RIVER MOUTH AND MAZARUNI RIVER MOUTH 1982 R.E. SCHMIDT
Leporinus nigrotaeniatus KARTABO POINT, CONFLUENCE OF MAZARUNI AND CUYUNI RIVERS 1983 R.E. SCHMIDT
Leporinus nigrotaeniatus MALALI   F.R. LAMONTE
Leporinus nigrotaeniatus MAZARUNI RIVER MOUTH, KARTABO POINT 1982 R.E. SCHMIDT
Leporinus nigrotaeniatus ROCKSTONE   F.R. LAMONTE
Leporinus nigrotaeniatus SANDBAR ON NORTH BANK CUYUNI RIVER, JUST WEST OF CAOWRIE CREEK MOUTH, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Leporinus nigrotaeniatus SECOND ISLAND UPRIVER FROM KARTABO POINT, MAZARUNI RIVER 1983 R.E. SCHMIDT
Leporinus nigrotaeniatus TRIBUTARY TO UPPER ESSEQUIBO RIVER, ONORA ABOVE BIG FALLS (UNOROWO RIVER) 1937 A. FERNANDEZ Y.
Leporinus nigrotaeniatus TRIBUTARY TO UPPER ESSEQUIBO RIVER, ONORA ABOVE CATARACT (UNOROWO RIVER) 1937 A. FERNANDEZ Y.
Leporinus paralternus Rupununi R., Guyana, 2°-3°N, 50°20'W.    
Leptodoras linnelli CUYUNI RIVER AT MATOPE 1924 C.J. FERRARIS
Leptodoras linnelli DEMERARA RIVER, MALALI TO GREAT FALLS 1934 C.J. FERRARIS, B.A. BROWN
Lobotes surinamensis DEMERARA RIVER   J.T. NICHOLS
Loricaria cataphracta DEMERARA RIVER, WISMAR   F.R. LAMONTE
Loricaria cataphracta SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Loricaria cataphracta SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRY CREEK 1983 R.E. SCHMIDT
Loricaria cataphracta SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRY CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Loricaria cataphracta SANDBAR ON NORTH BANK CUYUNI RIVER, JUST WEST OF CAOWRIE CREEK MOUTH 1982 R.E. SCHMIDT
Loricariichthys brunneus DEMERARA RIVER, WISMAR   F.R. LAMONTE
Loricariichthys brunneus ESSEQUIBO RIVER, ROCKSTONE 1938 F.R. LAMONTE
Loricariichthys maculatus ESSEQUIBO RIVER, ROCKSTONE   B.A. BROWN
Loricariichthys maculatus ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Loricariichthys maculatus SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Loricariichthys maculatus SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Loricariichthys maculatus SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRY CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Loricariichthys maculatus SANDBAR ON NORTH BANK CUYUNI RIVER, JUST WEST OF CAOWRIE CREEK MOUTH 1982 R.E. SCHMIDT
Loricariichthys microdon ESSEQUIBO POND, ROCKSTONE 1937 F.R. LAMONTE
Lutjanus synagris Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Lycengraulis batesii ABOUT 100 m OFF KARTABO POINT, CONFLUENCE MAZARUNI AND CUYUNI RIVERS, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT; G. NELSON
Lycengraulis batesii ABOUT 100 m OFF KARTABO POINT, CONFLUENCE MAZARUNI AND CUYUNI RIVERS, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT; G. NELSON
Lycengraulis batesii JUNCTION MAZARUNI-CUYUNI AND ESSEQUIBO RIVERS BARTICA   G.J. NELSON
Lycengraulis batesii SANDBAR ON NORTH BANK CUYUNI RIVER, JUST WEST OF CAOWRIE CREEK MOUTH 1982 R.E. SCHMIDT; G. NELSON
Lycengraulis grossidens DEMERARA RIVE DEMERARA RIVER 1973  
Macrodon ancylodon GUYANA OFF MOUTH ESQUIBO, NEW AMSTERDAM R    
Makunaima guianensis DEMERARA RIVER   R.P. VARI
Makunaima guianensis ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Makunaima guianensis WISMAR   R.P. VARI
Makunaima guianensis YARAKITA RIVER 1937 F.R. LAMONTE
Mazarunia charadrica Shallow pool at HLF08-19, between 2-10m wide by about 20m long, Waruma Creek, upper Mazaruni River, Cuyuni-Mazaruni (Region 7) 2008  
Mazarunia pala Cuyuni-Mazaruni (Region 7), upper Mazaruni River, backwater channel on right bank in front of Warwata village, near mouth of Kamarang River 2011  
Megalechis thoracata ABANDONED FLOODED STONE QUARRY BEHIND GIDEON'S STORE, NORTH BANK MAZARUNI RIVER NEAR KARTABO, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Megalechis thoracata KARTABO 1920 C.W. BEEBE
Megalechis thoracata KURUPUNG RIVER, GEORGETOWN   R.E. REIS
Megalechis thoracata NEAR GEORGETOWN   R.E. REIS
Megalechis thoracata POTARO RIVER, TUMATUMARI   J.T. NICHOLS
Megalechis thoracata POTARO RIVER, TUMATUMARI   J.T. NICHOLS
Megalechis thoracata RUPUNUNI RIVER, WICHABAI (J. MELVILLE'S RANCH), 10 MILES NORTH OF DADANAWA 1938 R.E. REIS
Megalops atlanticus DEMERARA RIVER    
Menticirrhus americanus GEORGETOWN DEMERARA RIVER 1973  
Menticirrhus americanus GUYANA OFF MOUTH ESQUIBO, NEW AMSTERDAM R    
Mesonauta festivus DEMERARA RIVER    
Mesonauta festivus Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Mesonauta festivus Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Mesonauta festivus ESSEQUIBO POND, ROCKSTONE 1937 F.R. LAMONTE
Mesonauta festivus ESSEQUIBO RIVER, ROCKSTONE 1937 F.R. LAMONTE
Mesonauta festivus LAMA STOP-OFF, LAMA CREEK, IN CANAL AND BELOW DAM 1908 C.H. EIGENMANN
Mesonauta festivus POTARO RIVER, TUMATUMARI   J.T. NICHOLS
Mesonauta insignis DEMERARA RIVER, KORA-KORA CREEK 1935 M.L.J.STIASSNY,B.K.URBAIN
Mesonauta insignis DEMERARA RIVER, KORA-KORA CREEK 1935 M.L.J.STIASSNY,B.K.URBAIN
Mesonauta insignis DEMERARA RIVER, MALALI   M.L.J.STIASSNY,B.K.URBAIN
Mesonauta insignis DEMERARA RIVER, MALALI 1935 M.L.J.STIASSNY,B.K.URBAIN
Mesonauta insignis DEMERARA RIVER, WISMAR   M.L.J.STIASSNY,B.K.URBAIN
Mesonauta insignis DEMERARA RIVER, WISMAR 1933 M.L.J.STIASSNY,B.K.URBAIN
Mesonauta insignis ESSEQUIBO RIVER, ROCKSTONE   M. STIASSNY,B. URBAIN,L.*
Mesonauta insignis ROCKSTONE 1934 M.L.J.STIASSNY,B. URBAIN
Micromischodus sugillatus ARABABO RIVER *, TRIBUTARY TO KAKO-MAZARUNI RIVER 1939 B.A. BROWN,D.M. RODRIGUEZ
Microphis brachyurus SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Microphis brachyurus SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Microphis brachyurus SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRY CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Microphis brachyurus SANDBAR ON NORTH BANK CUYUNI RIVER, JUST WEST OF CAOWRIE CREEK MOUTH, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Micropoecilia bifurca MARI-MARI RIVER, MALALI   F.R. LAMONTE
Moenkhausia browni ARUBABO RIVER, TRIBUTARY OF KAKO-MAZARUNI 1939 F. WOOD, F.R. LAMONTE
Moenkhausia browni MAZARUNI RIVER, KAMAKUSA   J.T. NICHOLS
Moenkhausia browni MEMBARU CREEK, TRIBUTARY OF UPPER MAZARUNI RIVER 1938 F. WOOD, F.R. LAMONTE
Moenkhausia chrysargyrea ESSEQUIBO RIVER, ROCKSTONE   R.P.VARI
Moenkhausia chrysargyrea LAMAHA CANAL, EAST OF DEMERARA RIVER   F.R. LAMONTE
Moenkhausia chrysargyrea ROCKSTONE   R.P. VARI
Moenkhausia chrysargyrea SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Moenkhausia collettii ABANDONED FLOODED STONE QUARRY BEHIND GIDEON'S STORE, NORTH BANK MAZARUNI RIVER NEAR KARTABO, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Moenkhausia collettii BARRACARA CREEK ON EAST BANK MAZARUNI RIVER MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Moenkhausia collettii DEMERARA RIVER   R.P. VARI
Moenkhausia collettii KAIETEUR 1911 J.T. NICHOLS
Moenkhausia collettii LITTLE TAKUTU RIVER AND TRIBUTARIES, MAZARAHALLY TAKUTU LUMBER CAMP, WEST SHORE MAZARUNI RIVER 1983 R.E. SCHMIDT
Moenkhausia copei CEBO CREEK, NORTH BANK MAZARUNI RIVER, FEW HUNDRED YARDS EAST OF ST. EDWARDS CHURCH, KARTABO 1982 R.E. SCHMIDT
Moenkhausia copei CEBO CREEK, WEST BANK MAZARUNI RIVER, EAST OF ST. EDWARDS CHURCH, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Moenkhausia copei ESSEQUIBO RIVER, ROCKSTONE   R.P. VARI
Moenkhausia copei ROCK QUARRY BEHIND GIDEON'S STORE, WEST BANK MAZARUNI RIVER, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Moenkhausia copei Rockstone, Essequibo-River, Brit. Guayana   J. Gery rev. 1961
Moenkhausia cotinho ABANDONED FLOODED STONE QUARRY BEHIND GIDEON'S STORE, NORTH BANK MAZARUNI RIVER NEAR KARTABO, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Moenkhausia cotinho BARRACARA CREEK ON EAST BANK MAZARUNI RIVER MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Moenkhausia cotinho DEMERARA RIVER   R.P. VARI
Moenkhausia cotinho DEMERARA RIVER, MALALI ? 1934 R.P. VARI
Moenkhausia cotinho Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Moenkhausia cotinho ESSEQUIBO RIVER, ABOVE ROCKSTONE   F.R. LAMONTE
Moenkhausia cotinho MALALI   R.P. VARI
Moenkhausia cotinho ROCK QUARRY BEHIND GIDEON'S STORE, WEST BANK MAZARUNI RIVER, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Moenkhausia cotinho UPPER MAZARUNI DISTRICT, KURUPUNG RIVER 1938 F. WOOD, F.R. LAMONTE
Moenkhausia cotinho UPPER MAZARUNI DISTRICT, KURUPUNG RIVER 1938 F.R. LAMONTE
Moenkhausia cotinho UPPER MAZARUNI DISTRICT, MACKREBA FALLS, KURUPUNG RIVER 1939 R.P. VARI
Moenkhausia cotinho WISMAR 1934 R.P. VARI
Moenkhausia dichroura Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Moenkhausia dichroura NO FURTHER DATA    
Moenkhausia grandisquamis ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Moenkhausia grandisquamis ESSEQUIBO RIVER, ROCKSTONE   R.P. VARI
Moenkhausia grandisquamis KARTABO 1922 C.W. BEEBE; R.P. VARI
Moenkhausia grandisquamis KARTABO, JUNCTION MAZARUNI AND CUYUNI RIVERS, MARARUNI-POTARO DISTRICT   R.P. VARI
Moenkhausia grandisquamis ROCKSTONE   R.P. VARI
Moenkhausia grandisquamis ROCKSTONE, ESSEQUIBO RIVER AT STELLING(PIER), RAILROAD CUT BELOW TOWN, IN SMALL WOODLAND CREEK ON GLUCK ISLAND, ON/AROUND SAND BANK AT BEND ABOVE TOWN 1908 C.H. EIGENMANN
Moenkhausia lepidura BARRACARA CREEK ON EAST BANK MAZARUNI RIVER MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Moenkhausia lepidura CEBO CREEK, NORTH BANK MAZARUNI RIVER, FEW HUNDRED YARDS EAST OF ST. EDWARDS CHURCH, KARTABO 1982 R.E. SCHMIDT
Moenkhausia lepidura CEBO CREEK, WEST BANK MAZARUNI RIVER, EAST OF ST. EDWARDS CHURCH, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Moenkhausia lepidura ESSEQUIBO RIVER, ROCKSTONE   R.P. VARI
Moenkhausia lepidura FOREST STREAM EAST OF BATAVIA LANDING-GUYANA SAWMILLS, SOUTH BANK CUYUNI RIVER 1982 R.E. SCHMIDT
Moenkhausia lepidura ISOLATED TIDE POOLS IN FOREST, NORTH BANK CUYUNI RIVER 1983 R.E. SCHMIDT
Moenkhausia lepidura KARTABO POINT, CONFLUENCE OF MAZARUNI AND CUYUNI RIVERS 1983 R.E. SCHMIDT
Moenkhausia lepidura KARTABO, JUCNTION MAZARUNI AND CUYUNI RIVERS, MAZARUNI - POTARO DISTRICT 1922 C.W. BEEBE
Moenkhausia lepidura KARTABO, JUCNTION MAZARUNI AND CUYUNI RIVERS, MAZARUNI - POTARO DISTRICT 1922 C.W. BEEBE
Moenkhausia lepidura LITTLE TAKUTU RIVER AND TRIBUTARIES, MAZARAHALLY TAKUTU LUMBER CAMP, WEST SHORE MAZARUNI RIVER 1983 R.E. SCHMIDT
Moenkhausia lepidura MAZARUNI RIVER MOUTH, KARTABO POINT 1982 R.E. SCHMIDT
Moenkhausia lepidura MAZARUNI RIVER, KAMAKUSA   J.T. NICHOLS
Moenkhausia lepidura ROCK QUARRY BEHIND GIDEON'S STORE, WEST BANK MAZARUNI RIVER, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Moenkhausia lepidura Rockstone, Essequibo-River, Brit. Guayana   J. Gery rev. 1961
Moenkhausia lepidura SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Moenkhausia lepidura SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Moenkhausia lepidura SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRY CREEK 1983 R.E. SCHMIDT
Moenkhausia lepidura SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRY CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Moenkhausia lepidura SANDBAR ON NORTH BANK CUYUNI RIVER, JUST WEST OF CAOWRIE CREEK MOUTH 1982 R.E. SCHMIDT
Moenkhausia lepidura SANDBAR ON NORTH BANK CUYUNI RIVER, JUST WEST OF CAOWRIE CREEK MOUTH, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Moenkhausia lepidura SECOND ISLAND UPRIVER FROM KARTABO POINT, MAZARUNI RIVER 1983 R.E. SCHMIDT
Moenkhausia megalops DEMERARA RIVER, WISMAR   F.R. LAMONTE
Moenkhausia megalops SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRY CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Moenkhausia megalops SANDBAR ON NORTH BANK CUYUNI RIVER, JUST WEST OF CAOWRIE CREEK MOUTH, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Moenkhausia oligolepis BLACKWATER CREEK, ESSEQUIBO RIVER HEADWATERS 1938  
Moenkhausia oligolepis DEMERARA RIVER, WISMAR   R.P. VARI
Moenkhausia oligolepis ISOLATED TIDE POOLS IN FOREST, NORTH BANK CUYUNI RIVER 1983 R.E. SCHMIDT
Moenkhausia oligolepis LITTLE TAKUTU RIVER AND TRIBUTARIES, MAZARAHALLY TAKUTU LUMBER CAMP, WEST SHORE MAZARUNI RIVER 1983 R.E. SCHMIDT
Moenkhausia oligolepis MARI-MARI RIVER, MALALI   F.R. LAMONTE
Moenkhausia oligolepis MAZARUNI RIVER, KAMAKUSA   J.T. NICHOLS
Moenkhausia oligolepis POTARO RIVER, TUMATUMARI   J.T. NICHOLS
Moenkhausia oligolepis POTARO RIVER, TUMATUMARI   J.T. NICHOLS
Moenkhausia oligolepis SAMBITO FALLS, AMACURO RIVER   F.R. LAMONTE
Moenkhausia oligolepis UPPER MAZARUNI DISTRICT, KURUPUNG RIVER 1938 F. WOOD, F.R. LAMONTE
Moenkhausia oligolepis UPPER MAZARUNI DISTRICT, KURUPUNG RIVER 1938 F.R. LAMONTE
Moenkhausia shideleri DEMERARA RIVER, WISMAR   F.R. LAMONTE
Moenkhausia shideleri SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRY CREEK 1983 R.E. SCHMIDT
Moenkhausia surinamensis LITTLE TAKUTU RIVER AND TRIBUTARIES, MAZARAHALLY TAKUTU LUMBER CAMP, WEST SHORE MAZARUNI RIVER 1983 R.E. SCHMIDT
Monacanthus ciliatus Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Monocirrhus polyacanthus Brit. Guayana    
Monocirrhus polyacanthus ESSEQUIBO RIVER, ROCKSTONE 1936 F.R. LAMONTE
Monocirrhus polyacanthus ESSEQUIBO RIVER, ROCKSTONE 1937 F.R. LAMONTE
Mugil curema NORTHWEST DISTRICT, MORAWHANNA, BARIMA RIVER 1937 F.R. LAMONTE
Mugil incilis GEORGETOWN 1934 I.J. HARRISON
Mugil incilis GEORGETOWN DEMERARA RIVER 1973  
Myleus pacu BERBICE RIVER   F.R. LAMONTE
Myleus setiger JUNCTION OF MAZARUNI-CUYUNI AND ESSEQUIBO RIVERS, BARTICA 1935 R.P. VARI
Myloplus rubripinnis DEMERARA RIVER, AKYMA   M.H. HARNICK
Myloplus rubripinnis JUNCTION MAZARUNI-CUYUNI AND ESSEQUIBO RIVERS AT BARTICA   F.R. LAMONTE
Myloplus ternetzi DEMERARA RIVER, AKYMA   F.R. LAMONTE
Myloplus ternetzi SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Nannacara anomala DEMERARA RIVER, WISMAR   R. INGLE, M. BUERKLI
Nannacara bimaculata MAZARUNI RIVER, KAMAKUSA    
Nannostomus beckfordi HARARUNI CREEK 1936 F.R. LAMONTE
Nannostomus eques ESSEQUIBO RIVER, ROCKSTONE 1937 S. WEITZMAN
Nannostomus eques ESSEQUIBO RIVER, ROCKSTONE   S. WEITZMAN
Nannostomus espei Brit. Guayana    
Nannostomus espei Brit. Guayana    
Nannostomus harrisoni DEMERARA RIVER    
Nannostomus harrisoni DEMERARA RIVER, HAURARUNI 1936  
Nannostomus harrisoni DEMERARA RIVER, KAMUNI CREEK 1936 R.P. VARI
Nannostomus harrisoni DEMERARA RIVER, KORA-KORA CREEK 1935 M. BUERKLI, R. INGLE
Nannostomus harrisoni DEMERARA RIVER, WISMAR   R.P. VARI
Nannostomus harrisoni ESSEQUIBO RIVER, ROCKSTONE   R.P. VARI
Nannostomus harrisoni KORA KORA CREEK   A.S. PINKUS
Nannostomus harrisoni KORA-KORA CREEK   M. BUERKLI, R. INGLE
Nannostomus harrisoni MALALI   R.P. VARI
Nannostomus marginatus DEMERARA RIVER   R.P. VARI
Nannostomus marginatus ESSEQUIBO RIVER, ROCKSTONE   S. WEITZMAN
Nannostomus marginatus Essequibo-River, Brit. Guayana 1933  
Nannostomus marginatus KORA-KORA CREEK   R.P. VARI
Nannostomus marginatus KORA-KORA CREEK   R.P. VARI
Nannostomus marginatus KORA-KORA CREEK   R.P. VARI
Nannostomus marginatus KORA-KORA CREEK   R.P. VARI; S. WEITZMAN
Nannostomus marginatus KORA-KORA CREEK   S. WEITZMAN
Nannostomus marginatus MALALI   R.P. VARI
Nannostomus marginatus ROCKSTONE   R.P. VARI
Nannostomus marginatus ROCKSTONE   R.P. VARI
Nannostomus marginatus WISMAR   R.P. VARI
Nannostomus marginatus WISMAR   R.P. VARI
Nannostomus marginatus WISMAR    
Nannostomus minimus UPPER MAZARUNI DISTRICT, KURUPUNG RIVER 1938 S. WEITZMAN
Nannostomus trifasciatus DEMERARA RIVER, MALALI TO GREAT FALLS 1934 M. BUERKLI, R. INGLE
Nannostomus trifasciatus ESSEQUIBO RIVER, ROCKSTONE   S. WEITZMAN
Nannostomus trifasciatus KORA-KORA CREEK    
Nannostomus trifasciatus Rockstone, Essequibo-River, Brit. Guayana 1933  
Nannostomus trifasciatus WISMAR    
Nannostomus unifasciatus KORA-KORA CREEK   R. INGLE, M. BUERKLI
Nannostomus unifasciatus Wismar, Demerara-River, Brit. Guayana 1933  
Nannostomus unifasciatus YARAKITA RIVER 1937 F.R. LAMONTE
Nannoxyropsis ephippia Burro Burro River (Essequibo Drainage), Deer Falls between Deer Creek and Water Dog Falls 1997  
Narcine brasiliensis Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Neblinichthys brevibracchium Mouth of a small creek with cut banks and primary forest, lower Kukui River at Jawalla, upper Mazaruni River drainage. 2008  
Neblinichthys echinasus Kukui River, near town of Philipai, upper Mazaruni River drainage 2008  
Nebris microps DEMERARA RIVER   N. BORODIN
Nebris microps GUYANA OFF MOUTH ESQUIBO, NEW AMSTERDAM R    
Odontognathus mucronatus DEMERARA RIVE DEMERARA RIVER 1973  
Oligoplites saurus GUYANA OFF MOUTH ESQUIBO, NEW AMSTERDAM R    
Ophichthus gomesii Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Opisthonema oglinum Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Oreochromis mossambicus GEORGETOWN DEMERARA RIVER 1973  
Oreochromis mossambicus GEORGETOWN DEMERARA RIVER 1973  
Orthopristis chrysoptera Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Orthopristis rubra GUYANA OFF MOUTH ESQUIBO, NEW AMSTERDAM R    
Oxyropsis carinata ESSEQUIBO RIVER, ROCKSTONE   B.A. BROWN, C.J. FERRARIS
Pachypops fourcroi KARTABO, JUNCTION MAZARUNI AND CUYUNI RIVERS, MAZARUNI - POTARO DISTRICT 1924 L. CASATTI
Pachypops fourcroi KARTABO, JUNCTION MAZARUNI AND CUYUNI RIVERS, MAZARUNI - POTARO DISTRICT 1921 L. CASATTI
Pachypops fourcroi KARTABO, JUNCTION MAZARUNI AND CUYUNI RIVERS, MAZARUNI-POTARO DISTRICT   L. CASATTI
Pachypops fourcroi SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Pachypops fourcroi SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRY CREEK 1983 R.E. SCHMIDT
Pachypops fourcroi SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRY CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Pachypops fourcroi SANDBAR ON NORTH BANK CUYUNI RIVER, JUST WEST OF CAOWRIE CREEK MOUTH 1982 R.E. SCHMIDT
Panaqolus claustellifer Takutu River near Lethem, rio Branco drainage, Amazon River 2005  
Paracanthopoma parva ABOUT 100 m OFF KARTABO POINT, CONFLUENCE MAZARUNI AND CUYUNI RIVERS 1983 R.E. SCHMIDT
Paracanthopoma parva ABOUT 100 m OFF KARTABO POINT, CONFLUENCE MAZARUNI AND CUYUNI RIVERS 1983 R.E. SCHMIDT
Paracheirodon axelrodi DEMERARA RIV DEMERARA RIVER 1973  
Parapristella aubynei Lamaha- Kanäle bei Georgetown, Brit. Guayana   J. Gery rev. 1961
Parotocinclus collinsae Essequibo R. drainage, trib. to Takutu R., 6°15'N, 59°5'W, Essequibo, Guyana.    
Paulasquama callis Cuyuni-Mazaruni, Waruma River, Kako River-Mazaruni River drainage (riffles and shallow rapids upstream from camp). 2008  
Peckoltia cavatica Rupununi R., 3.7 km sse. of Massara, 03.86228°N, -059.28439°W, Rupununi (Region 9), Guyana.    
Peckoltia sabaji 5.9 km west-southwest of village of Sand Creek, 02.96656°, -059.56943°, Essequibo R. drainage, Rupununi (Region 9), Guyana.    
Pellona harroweri GUYANA OFF MOUTH ESQUIBO, NEW AMSTERDAM R    
Peprilus paru Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Petulanos plicatus CUYUNI RIVER HALFWAY BETWEEN LANDING AND MOUTH IN ESSEQUIBO, NEAR NABIE WAN (RIVER) 1937 A. FERNANDEZ Y.
Petulanos plicatus Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Petulanos plicatus RUPUNUNI RIVER, WICHABAI (J. MELVILLE'S RANCH), 10 MILES NORTH OF DADANAWA 1938 A. FERNANDEZ Y.
Petulanos plicatus TRIBUTARY TO UPPER ESSEQUIBO RIVER, ONORA ABOVE BIG FALLS (UNOROWO RIVER) 1937 A. FERNANDEZ Y.
Petulanos plicatus TRIBUTARY TO UPPER ESSEQUIBO RIVER, ONORA ABOVE CATARACT (UNOROWO RIVER) 1937 A. FERNANDEZ Y.
Phenacogaster carteri UPPER MAZARUNI DISTRICT, KURUPUNG RIVER 1938 F. WOOD, F.R. LAMONTE
Phenacogaster megalostictus DEMERARA RIVER   R.P. VARI
Phenacogaster megalostictus ESSEQUIBO RIVER, ROCKSTONE   R.P. VARI
Phenacogaster megalostictus ESSEQUIBO RIVER, ROCKSTONE   R.P. VARI
Phenacogaster megalostictus KARTABO 1924 R.P. VARI
Phenacogaster megalostictus NO FURTHER DATA   R.P. VARI
Phenacogaster megalostictus ROCKSTONE   R.P. VARI
Phenacogaster megalostictus WISMAR   R.P. VARI
Phenacogaster microstictus DEMERARA RIVER   R.P. VARI
Phenacogaster microstictus DEMERARA RIVER, MALALI TO GREAT FALLS 1934 R.P. VARI
Phenacogaster microstictus ESSEQUIBO RIVER, ROCKSTONE   R.P. VARI
Phenacogaster microstictus ROCKSTONE   R.P. VARI
Phenacogaster microstictus ROCKSTONE   R.P. VARI
Phenacogaster microstictus SAMBITO FALLS, AMACURO RIVER 1938 F. WOOD, F.R. LAMONTE
Phenacogaster microstictus WISMAR   R.P. VARI
Phenacogaster microstictus WISMAR   R.P. VARI
Phenacogaster microstictus WISMAR 1935 R.P. VARI
Phenacogaster simulata Potaro-Siparuni: Tukeit Falls (Rio Potaro, Mahdia) 1990  
Piabucina unitaeniata MEMBARU CREEK, TRIBUTARY OF UPPER MAZARUNI RIVER 1938 F. WOOD, F.R. LAMONTE
Piabucus dentatus ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Piabucus dentatus JUNCTION MAZARUNI-CUYUNI AND ESSEQUIBO RIVERS BARTICA   F.R. LAMONTE
Piabucus dentatus YARAKITA RIVER 1937 F.R. LAMONTE
Piabucus dentatus YARAKITA RIVER 1937 F.R. LAMONTE
Pimelodella cristata Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Pimelodella cristata ESSEQUIBO RIVER, ABOVE ROCKSTONE   F.R. LAMONTE
Pimelodella cristata ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Pimelodella cristata KARTABO 1922 M.H.HARNICK,D.R.RODRIGUEZ
Pimelodella cristata SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Pimelodella cristata SANDBAR ON NORTH BANK CUYUNI RIVER, JUST WEST OF CAOWRIE CREEK MOUTH 1982 R.E. SCHMIDT
Pimelodella cristata SANDBAR ON NORTH BANK CUYUNI RIVER, JUST WEST OF CAOWRIE CREEK MOUTH, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Pimelodella leptosoma Rupununi R., Guyana, 2°-3°N, 50°20'W.    
Pimelodella macturki BERBICE RIVER   B.A. BROWN
Pimelodella macturki BERBICE RIVER   F.R. LAMONTE
Pimelodella macturki DEMERARA RIVER, WISMAR 1933 B.A. BROWN
Pimelodella macturki Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Pimelodella macturki KABURI ROCK, MAZARUNI RIVER   F.R. LAMONTE
Pimelodus albofasciatus ABOUT 100 m OFF KARTABO POINT, CONFLUENCE MAZARUNI AND CUYUNI RIVERS, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Pimelodus albofasciatus SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Pimelodus albofasciatus SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRY CREEK 1983 R.E. SCHMIDT
Pimelodus albofasciatus SANDBAR ON NORTH BANK CUYUNI RIVER, JUST WEST OF CAOWRIE CREEK MOUTH 1982 R.E. SCHMIDT
Pimelodus albofasciatus SANDBAR ON NORTH BANK CUYUNI RIVER, JUST WEST OF CAOWRIE CREEK MOUTH, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT, K. SCHMIDT
Pimelodus blochii ABOUT 100 m OFF KARTABO POINT, CONFLUENCE MAZARUNI AND CUYUNI RIVERS 1983 R.E. SCHMIDT
Pimelodus blochii SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Pimelodus ornatus BERBICE RIVER   B.A. BROWN
Pimelodus ornatus DEMERARA RIVER, MALALI 1935 C.J. FERRARIS, B.A. BROWN
Pimelodus ornatus ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Pimelodus ornatus KARTABO 1924 C.W. BEEBE
Pimelodus ornatus NO FURTHER DATA    
Pimelodus ornatus Rupununi R., Guyana, 2°-3°N, 50°20'W.    
Pimelodus ornatus SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Pimelodus ornatus SANDBAR ON NORTH BANK CUYUNI RIVER, JUST WEST OF CAOWRIE CREEK MOUTH, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Plagioscion squamosissimus ABOUT 100 METERS OFF KARTABO POINT, CONFLUENCE OF MAZARUNI AND CUYUNI RIVERS, MAZARUNI- POTARO DISTRICT 1983 L. CASATTI
Plagioscion squamosissimus KARTABO 1924 L. CASATTI
Plagioscion squamosissimus KURUPUNG RIVER, GEORGETOWN   J.T. NICHOLS; L. CHAO
Plagioscion squamosissimus SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 L. CASATTI
Plagioscion surinamensis DEMERARA RIV DEMERARA RIVER 1973  
Platydoras costatus TRIBUTARY TO UPPER ESSEQUIBO RIVER, ONORA ABOVE CATARACT (UNOROWO RIVER) 1937  
Platydoras hancockii DEMERARA RIVER, MALALI   C.J. FERRARIS
Platydoras hancockii ESSEQUIBO RIVER, ABOVE ROCKSTONE   B.A. BROWN, C.J. FERRARIS
Platystacus cotylephorus DEMERARA RIVER, SAND HILLS 1937 F.R. LAMONTE
Platyurosternarchus crypticus Moco-Moco Creek, upper Takutu River (Rio Branco basin), N slope of base of Kanuku Mountains, approximately 16 km E of Lethem, Rupununi (Region 9) 1971  
Poecilia parae DEMERARA RIVER, GEORGETOWN 1937 C. HUBBS, D.E. ROSEN
Poecilia parae DEMERARA RIVER, MALALI TO GREAT FALLS 1934 D.E. ROSEN
Poecilia parae DEMERARA RIVER, WISMAR 1935  
Poecilia parae DEMERARA RIVER, WISMAR    
Poecilia parae MARI-MARI RIVER, MALALI   C. HUBBS, D.E. ROSEN
Poecilia parae MARI-MARI RIVER, MALALI   D.E. ROSEN
Poecilia picta HAULOVER, ARANA RIVER (ARUAU? - MNF) 1938 F. WOOD, F.R. LAMONTE*
Poecilia picta NORTHWEST DISTRICT, MORAWHANNA, BARIMA RIVER 1937 D.E. ROSEN, C. HUBBS
Poecilia picta YARAKITA RIVER 1937 D.E. ROSEN, C. HUBBS
Poecilia reticulata AKIMA ISLAND 1924 C.W. BEEBE
Poecilia reticulata ARUAU RIVER, TRIBUTARY OF BARAMA NEAR ITS MOUTH IN THE WAINI 1937 M. RAUCHENBERGER
Poecilia reticulata BARRACARA CREEK ON EAST BANK MAZARUNI RIVER MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Poecilia reticulata CEBO CREEK, NORTH BANK MAZARUNI RIVER, FEW HUNDRED YARDS EAST OF ST. EDWARDS CHURCH, KARTABO 1982 R.E. SCHMIDT
Poecilia reticulata CEBO CREEK, WEST BANK MAZARUNI RIVER, EAST OF ST. EDWARDS CHURCH, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Poecilia reticulata CONTINGA CREEK 1924 D.E. ROSEN
Poecilia reticulata FOREST STREAM EAST OF BATAVIA LANDING-GUYANA SAWMILLS, SOUTH BANK CUYUNI RIVER 1982 R.E. SCHMIDT
Poecilia reticulata ISOLATED TIDE POOLS IN FOREST, NORTH BANK CUYUNI RIVER 1983 R.E. SCHMIDT
Poecilia reticulata LITTLE TAKUTU RIVER AND TRIBUTARIES, MAZARAHALLY TAKUTU LUMBER CAMP, WEST SHORE MAZARUNI RIVER 1983 R.E. SCHMIDT
Poecilia reticulata POTARO RIVER, TUMATUMARI   J.T. NICHOLS; D.E. ROSEN
Poecilia reticulata WHYAPE CREEK, FIRST CREEK ON NORTH BANK CUYUNI RIVER, WEST OF MOUTH 1982 R.E. SCHMIDT
Poecilia vivipara DEMERARA RIVER, GEORGETOWN   F.R. LAMONTE
Poecilia vivipara DEMERARA RIVER, WISMAR   D.E. ROSEN
Poecilia vivipara MALALI   M.H. HARNICK
Polycentrus schomburgkii ABANDONED FLOODED STONE QUARRY BEHIND GIDEON'S STORE, NORTH BANK MAZARUNI RIVER NEAR KARTABO, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Polycentrus schomburgkii ABANDONED QUARRY POOLS AND BARRACARA CREEK, EAST BANK MAZARUNI RIVER 1983 R.E. SCHMIDT
Polycentrus schomburgkii ESSEQUIBO RIVER, ROCKSTONE 1937 F.R. LAMONTE
Polycentrus schomburgkii GEORGETOWN 1911  
Polycentrus schomburgkii GEORGETOWN   J.T. NICHOLS
Polycentrus schomburgkii LAMA STOP-OFF, LAMA CREEK, IN CANAL AND BELOW DAM 1908 C.H. EIGENMANN
Polycentrus schomburgkii LAMAHA CANAL, EAST OF DEMERARA RIVER   F.R. LAMONTE
Polycentrus schomburgkii ROCK QUARRY BEHIND GIDEON'S STORE, WEST BANK MAZARUNI RIVER, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Polycentrus schomburgkii YARAKITA RIVER 1937 F.R. LAMONTE
Polycentrus schomburgkii YARAKITA RIVER 1937 F.R. LAMONTE
Pomatomus saltatrix Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Poptella compressa ABANDONED FLOODED STONE QUARRY BEHIND GIDEON'S STORE, NORTH BANK MAZARUNI RIVER NEAR KARTABO, ESSEQUIBO DISTRICT 1982 R.E. REIS
Poptella compressa CEBO CREEK, WEST BANK MAZARUNI RIVER, EAST OF ST. EDWARDS CHURCH, MAZARUNI-POTARO DISTRICT 1983 R.E. REIS
Poptella compressa DEMERARA RIVER, MALALI TO GREAT FALLS 1934 R.E. REIS
Poptella compressa DEMERARA RIVER, WISMAR 1934 R.E. REIS
Poptella compressa DEMERARA RIVER, WISMAR 1934 R.E. REIS
Poptella compressa ESSEQUIBO RIVER, ROCKSTONE 1937 R.E. REIS
Poptella compressa ESSEQUIBO RIVER, ROCKSTONE 1938 R.E. REIS
Poptella compressa KONAWARUK RIVER AT MOUTH IN ESSEQUIBO, BACK- WATER LAGOON AND POOL BELOW DIKE ACROSS ESSEQUIBO 1908 R.E. REIS
Poptella compressa MAZARUNI RIVER, KAMAKUSA   R.E. REIS
Poptella compressa ROCK QUARRY BEHIND GIDEON'S STORE, WEST BANK MAZARUNI RIVER, MAZARUNI-POTARO DISTRICT 1983 R.E. REIS
Poptella compressa SAMBITO FALLS, AMACURO RIVER 1938 R.E. REIS
Poptella compressa UPPER MAZARUNI DISTRICT, KURUPUNG 1938 R.E. REIS
Poptella compressa YARAKITA RIVER 1937 R.E. REIS
Poptella longipinnis Rupununi R., Guyana, 2°-3°N, 50°20'W.    
Porichthys porosissimus Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Potamorrhaphis guianensis CEBO CREEK, NORTH BANK MAZARUNI RIVER, FEW HUNDRED YARDS EAST OF ST. EDWARDS CHURCH, KARTABO 1982 R.E. SCHMIDT
Potamorrhaphis guianensis DEMERARA RIVER, MALALI TO GREAT FALLS 1934 M.H. HARNICK
Potamorrhaphis guianensis DEMERARA RIVER, WISMAR   F.R. LAMONTE
Potamorrhaphis guianensis ESSEQUIBO RIVER, ROCKSTONE 1938 F.R. LAMONTE
Potamorrhaphis guianensis JUNCTION MAZARUNI-CUYUNI AND ESSEQUIBO RIVERS BARTICA    
Potamorrhaphis guianensis ROCKSTONE   B.A. BROWN,R.A. ARRINDELL
Potamorrhaphis guianensis Rockstone, Brit. Guayana 1938  
Potamorrhaphis guianensis WISMAR   B.A. BROWN,R.A. ARRINDELL
Potamorrhaphis guianensis WISMAR 1935 B.A. BROWN,R.A. ARRINDELL
Potamorrhaphis guianensis WISMAR   M.H. HARNICK
Potamotrygon orbignyi ca. 40 MILES SOUTHWEST OF GEORGETOWN TROPICAL RESEARCH STATION, KARTABO   R.S. ROSA, CASTEX
Potamotrygon orbignyi ca. 40 MILES SOUTHWEST OF GEORGETOWN TROPICAL RESEARCH STATION, KARTABO   R.S. ROSA, J. TEE-VAN
Priacanthus arenatus Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Prionotus rubio Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Prionotus stearnsi Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Pristella maxillaris ABANDONED FLOODED STONE QUARRY BEHIND GIDEON'S STORE, NORTH BANK MAZARUNI RIVER NEAR KARTABO, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Pristella maxillaris ARUAU RIVER, TRIBUTARY OF BARAMA NEAR ITS MOUTH IN THE WAINI 1937 F.R. LAMONTE
Pristella maxillaris BARRACARA CREEK ON EAST BANK MAZARUNI RIVER MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Pristella maxillaris CEBO CREEK, NORTH BANK MAZARUNI RIVER, FEW HUNDRED YARDS EAST OF ST. EDWARDS CHURCH, KARTABO 1982 R.E. SCHMIDT
Pristella maxillaris CEBO CREEK, WEST BANK MAZARUNI RIVER, EAST OF ST. EDWARDS CHURCH, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Pristella maxillaris DEMERARA RIV DEMERARA RIVER 1973  
Pristella maxillaris DEMERARA RIVER, WISMAR 1935 A.S. PINKUS
Pristella maxillaris DEMERARA RIVER, WISMAR 1935 F.R. LAMONTE
Pristella maxillaris ESSEQUIBO RIVER, ROCKSTONE 1937 F.R. LAMONTE
Pristella maxillaris FOREST STREAM EAST OF BATAVIA LANDING-GUYANA SAWMILLS, SOUTH BANK CUYUNI RIVER 1982 R.E. SCHMIDT
Pristella maxillaris GEORGETOWN BOTANIC GARDEN TRENCH 1908 C.H. EIGENMANN
Pristella maxillaris ISOLATED TIDE POOLS IN FOREST, NORTH BANK CUYUNI RIVER 1983 R.E. SCHMIDT
Pristella maxillaris ROCK QUARRY BEHIND GIDEON'S STORE, WEST BANK MAZARUNI RIVER 1983 R.E. SCHMIDT
Pristella maxillaris ROCK QUARRY BEHIND GIDEON'S STORE, WEST BANK MAZARUNI RIVER, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Pristella maxillaris SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRY CREEK 1983 R.E. SCHMIDT
Pristella maxillaris SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRY CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Pristella maxillaris WHYAPE CREEK, FIRST CREEK ON NORTH BANK CUYUNI RIVER, WEST OF MOUTH 1982 R.E. SCHMIDT
Pristella maxillaris YARAKITA RIVER 1937 F.R. LAMONTE
Pristella maxillaris YARAKITA RIVER 1937 F.R. LAMONTE
Pristipomoides macrophthalmus Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Pristobrycon aureus ESSEQUIBO    
Pristobrycon aureus ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Pristobrycon striolatus DEMERARA RIVER, WISMAR   F.R. LAMONTE
Prochilodus rubrotaeniatus ESSEQUIBO POND, ROCKSTONE 1937 R.M.C. CASTRO
Prochilodus rubrotaeniatus SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Prochilodus rubrotaeniatus SANDBAR ON NORTH BANK CUYUNI RIVER, JUST WEST OF CAOWRIE CREEK MOUTH, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Prosomyleus rhomboidalis KAMARIA, CUYUNI RIVER 1922 C.W.BEEBE;BROWN,ARRINDELL
Psalidodon anisitsi ABANDONED FLOODED STONE QUARRY BEHIND GIDEON'S STORE, NORTH BANK MAZARUNI RIVER NEAR KARTABO, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Psalidodon anisitsi ROCK QUARRY BEHIND GIDEON'S STORE, WEST BANK MAZARUNI RIVER 1983 R.E. SCHMIDT
Psalidodon anisitsi ROCK QUARRY BEHIND GIDEON'S STORE, WEST BANK MAZARUNI RIVER, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Psalidodon fasciatus Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Pseudacanthicus leopardus Rupununi R., Guyana, 2°-3°N, 50°20'W.    
Pseudacanthicus serratus ABOUT 100 m OFF KARTABO POINT, CONFLUENCE MAZARUNI AND CUYUNI RIVERS, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Pseudancistrus barbatus ESSEQUIBO RIVER, ROCKSTONE 1937 F.R. LAMONTE
Pseudancistrus guentheri KARTABO, JUNCTION MAZARUNI AND CUYUNI RIVERS, MAZARUNI - POTARO DISTRICT   C.J. FERRARIS, B.A. BROWN
Pseudauchenipterus nodosus ABOUT 100 m OFF KARTABO POINT, CONFLUENCE MAZARUNI AND CUYUNI RIVERS 1983 R.E. SCHMIDT
Pseudauchenipterus nodosus ABOUT 100 m OFF KARTABO POINT, CONFLUENCE MAZARUNI AND CUYUNI RIVERS, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Pseudauchenipterus nodosus DEMERARA RIVER   J.T. NICHOLS
Pseudauchenipterus nodosus DEMERARA RIVER, NEAR GEORGETOWN   F.R. LAMONTE
Pseudauchenipterus nodosus GEORGETOWN, TRENCHES 1908 C.H. EIGENMANN
Pseudauchenipterus nodosus POTARO RIVER, TUMATUMARI   J.T. NICHOLS
Pseudobatos lentiginosus Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Pseudopimelodus bufonius GEORGETOWN    
Pterophyllum scalare ESSEQUIBO RIVER, ROCKSTONE 1937 F.R. LAMONTE
Pterophyllum scalare ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Pterophyllum scalare ESSEQUIBO RIVER, ROCKSTONE   F.R. LAMONTE
Pterophyllum scalare ROCKSTONE   A.S. PINKUS
Pygopristis denticulata DEMERARA RIVER, WISMAR   F.R. LAMONTE
Pyrrhulina filamentosa ABANDONED FLOODED STONE QUARRY BEHIND GIDEON'S STORE, NORTH BANK MAZARUNI RIVER NEAR KARTABO, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Pyrrhulina filamentosa ABANDONED QUARRY POOLS AND BARRACARA CREEK, EAST BANK MAZARUNI RIVER 1983 R.E. SCHMIDT
Pyrrhulina filamentosa ARUATAIMA CATARACT 1908 C.H. EIGENMANN
Pyrrhulina filamentosa BARRACARA CREEK ON EAST BANK MAZARUNI RIVER MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Pyrrhulina filamentosa DEMERARA RIVER, WISMAR 1934 R.P. VARI
Pyrrhulina filamentosa ISOLATED TIDE POOLS IN FOREST, NORTH BANK CUYUNI RIVER 1983 R.E. SCHMIDT
Pyrrhulina filamentosa KARTABO POINT, CONFLUENCE OF MAZARUNI AND CUYUNI RIVERS 1983 R.E. SCHMIDT
Pyrrhulina filamentosa KURUPUNG RIVER, GEORGETOWN   J.T. NICHOLS
Pyrrhulina filamentosa POTARO RIVER, TUMATUMARI   J.T. NICHOLS
Pyrrhulina filamentosa ROCK QUARRY BEHIND GIDEON'S STORE, WEST BANK MAZARUNI RIVER 1983 R.E. SCHMIDT
Pyrrhulina filamentosa ROCK QUARRY BEHIND GIDEON'S STORE, WEST BANK MAZARUNI RIVER, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Pyrrhulina filamentosa SMALL STREAM ON FOREST ROAD FROM SKULL POINT, NORTH BANK CUYUNI RIVER 1983 R.E. SCHMIDT
Pyrrhulina filamentosa UPPER MAZARUNI DISTRICT, KURUPUNG RIVER 1922  
Pyrrhulina laeta Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Pyrrhulina stoli Brit. Guayana    
Pyrrhulina stoli Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Rachycentron canadum Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Remora australis Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Rhamdia foina Rupununi R., Guyana, 2°-3°N, 50°20'W.    
Rhamdia quelen POTARO RIVER, TUMATUMARI   J.T. NICHOLS
Rhamdia quelen POTARO RIVER, TUMATUMARI   J.T. NICHOLS
Rhamdia quelen POTARO RIVER, TUMATUMARI   J.T. NICHOLS
Rhamdia quelen POTARO RIVER, TUMATUMARI   J.T. NICHOLS
Rhamdia quelen POTARO RIVER, TUMATUMARI   J.T. NICHOLS
Rhamdia quelen POTARO RIVER, TUMATUMARI   J.T. NICHOLS
Rhamdia quelen UPPER RIVER KAMERANG, 20 MILES ABOVE PARUIMA 1938 F.R. LAMONTE
Rhamphichthys rostratus DEMERARA RIVER, SAND HILLS 1936 F.R. LAMONTE
Rhamphichthys rostratus SANDBAR ON NORTH BANK CUYUNI RIVER, JUST WEST OF CAOWRIE CREEK MOUTH, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Rhinodoras armbrusteri Takutu River, Branco drainage, St. Ignatius, 1.9 km NNE of Lethem, Rupununi 2003  
Rhomboplites aurorubens Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Rineloricaria strigilata DEMERARA RIVER, WISMAR   B.A. BROWN
Rineloricaria strigilata ESSEQUIBO RIVER, ROCKSTONE   B.A. BROWN
Rineloricaria strigilata JUNCTION MAZARUNI-CUYUNI AND ESSEQUIBO RIVERS BARTICA   B.A. BROWN
Roestes ogilviei Rupununi R., Guyana, 2°-3°N, 50°20'W.    
Satanoperca jurupari DEMERARA RIVER, GREAT FALLS 1934  
Satanoperca jurupari MADUNI STOP-OFF, MADUNI CREEK, IN CANAL AND BELOW THE DAM 1908 C.H. EIGENMANN
Satanoperca leucosticta DEMERARA RIVER   H. LOPEZ FERNANDEZ
Satanoperca leucosticta DEMERARA RIVER   H. LOPEZ-FERNANDEZ
Satanoperca leucosticta DEMERARA RIVER, WISMAR 1935 H. LOPEZ-FERNANDEZ
Satanoperca leucosticta DEMERARA RIVER, WISMAR   H. LOPEZ-FERNANDEZ
Satanoperca leucosticta DEMERARA RIVER, WISMAR   H. LOPEZ-FERNANDEZ
Satanoperca leucosticta MALALI   H. LOPEZ-FERNANDEZ
Satanoperca leucosticta MALALI   H. LOPEZ-FERNANDEZ
Satanoperca leucosticta MALALI   M.L.J.STIASSNY,B.K.URBAIN
Satanoperca leucosticta POTARO RIVER, TUMATUMARI   H. LOPEZ-FERNANDEZ
Satanoperca leucosticta RUPUNUNI RIVER, WICHABAI (J. MELVILLE'S RANCH), 10 MILES NORTH OF DADANAWA 1938 M.L.J. STIASSNY
Saurida caribbaea Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Schizodon fasciatus Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Sciades herzbergii GEORGETOWN, TRENCHES 1908 C.H. EIGENMANN
Sciades herzbergii KURUPUNG RIVER, GEORGETOWN   J.T. NICHOLS
Sciades herzbergii POTARO RIVER, TUMATUMARI   J.T. NICHOLS
Sciades proops LAMA STOP-OFF, LAMA CREEK, IN CANAL AND BELOW DAM 1908 C.H. EIGENMANN
Scomber japonicus Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Scomberomorus cavalla Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Selar crumenophthalmus GUYANA OFF MOUTH ESQUIBO, NEW AMSTERDAM R    
Selene vomer Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Serranus phoebe Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Serrasalmus eigenmanni DEMERARA RIVER   R.P. VARI
Serrasalmus eigenmanni ESSEQUIBO    
Serrasalmus marginatus ESSEQUIBO POND, ROCKSTONE 1937 F.R. LAMONTE
Serrasalmus rhombeus ABOUT 100 m OFF KARTABO POINT, CONFLUENCE MAZARUNI AND CUYUNI RIVERS, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Serrasalmus rhombeus ABOUT 100 m OFF KARTABO POINT, CONFLUENCE MAZARUNI AND CUYUNI RIVERS, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Serrasalmus rhombeus DEMERARA RIVER, MALALI   B.A. BROWN
Serrasalmus rhombeus ESSEQUIBO    
Serrasalmus rhombeus JUNCTION MAZARUNI-CUYUNI AND ESSEQUIBO RIVERS BARTICA   F.R. LAMONTE
Serrasalmus rhombeus NO FURTHER DATA    
Serrasalmus rhombeus SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Serrasalmus rhombeus SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRY CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Serrasalmus rhombeus SANDBAR ON NORTH BANK CUYUNI RIVER, JUST WEST OF CAOWRIE CREEK MOUTH, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Serrasalmus rhombeus SECOND ISLAND UPRIVER FROM KARTABO POINT, MAZARUNI RIVER 1983 R.E. SCHMIDT
Serrasalmus rhombeus YARAKITA RIVER 1937 F.R. LAMONTE
Serrasalmus rhombeus YARAKITA RIVER 1937 F.R. LAMONTE
Serrasalmus serrulatus SANDBAR ON NORTH BANK CUYUNI RIVER, JUST WEST OF CAOWRIE CREEK MOUTH, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Skiotocharax meizon Trib. of the Mazaruni R., upstream of Aruwai Falls, ca. 6°18'46"N, 60°35'41"W, Guyana.    
Sorubim lima NO FURTHER DATA   M.H. HARNICK
Sphoeroides nephelus Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Sphoeroides testudineus DEMERARA RIVER, GEORGETOWN 1934 J.C. TYLER
Sphoeroides testudineus GUYANA OFF MOUTH ESQUIBO, NEW AMSTERDAM R    
Sphyraena guachancho GUYANA OFF MOUTH ESQUIBO, NEW AMSTERDAM R    
Sphyrna tudes GUYANA OFF MOUTH ESQUIBO, NEW AMSTERDAM R    
Steatogenys elegans DEMERARA RIV DEMERARA RIVER 1973  
Steatogenys elegans DEMERARA RIVER, SAND HILLS 1936  
Steatogenys elegans KORA-KORA CREEK 1935 R.P. VARI
Steatogenys elegans MARI-MARI RIVER, MALALI   F.R. LAMONTE
Steatogenys elegans Rockstone, Brit. Guayana 1938  
Steindachnerina guentheri ARUAU RIVER, TRIBUTARY OF BARAMA NEAR ITS MOUTH IN THE WAINI 1937 R.P. VARI
Stellifer lanceolatus DEMERARA RIV DEMERARA RIVER 1973  
Stellifer microps GEORGETOWN DEMERARA RIVER 1973  
Stellifer microps GUYANA OFF MOUTH ESQUIBO, NEW AMSTERDAM R    
Stephanolepis hispida Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Sternarchorhynchus freemani Essequibo River basin, Lower Potaro River at Amatuk. 1908  
Sternopygus macrurus ABOUT 100 m OFF KARTABO POINT, CONFLUENCE MAZARUNI AND CUYUNI RIVERS, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Sternopygus macrurus GEORGETOWN    
Sternopygus macrurus Niederl. Guayana 1906  
Sternopygus macrurus TRIBUTARY TO UPPER ESSEQUIBO RIVER, ONORA ABOVE BIG FALLS (UNOROWO RIVER) 1937 A. FERNANDEZ Y.
Sternopygus macrurus Wismar, Brit. Guayana 1938  
Sturisoma monopelte Rupununi R., Guyana, 2°-3°N, 50°20'W.    
Syacium micrurum [occurrence summary] 1969  
Syacium micrurum [occurrence summary] 1969  
Syacium micrurum [occurrence summary] 1969  
Syacium micrurum [occurrence summary] 1969  
Syacium micrurum [occurrence summary] 1969  
Syacium papillosum [occurrence summary] 1967  
Syacium papillosum [occurrence summary] 1969  
Syacium papillosum [occurrence summary] 1969  
Symphurus plagiusa [occurrence summary] 1969  
Symphurus plagiusa [occurrence summary] 1969  
Symphurus plagiusa [occurrence summary] 1969  
Symphurus plagiusa Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Synbranchus marmoratus DEMERARA RIVER    
Synbranchus marmoratus MARUDI MOUNTAINS, UPPER RUPUNUNI RIVER 1938 A. FERNANDEZ Y.
Synbranchus marmoratus WISMAR 1934  
Synodontis clarias BERBICE RIVER   F.R. LAMONTE
Synodontis clarias Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Synodontis clarias KARTABO 1922 C.W.BEEBE;BROWN,ARRINDELL
Synodontis clarias RUPUNUNI RIVER, SAVANNAH POND NEAR DADANAWA 1938 D. MARCY
Synodontis clarias RUPUNUNI RIVER, SAVANNAH POND, DADANAWA 1938 A. FERNANDEZ Y.
Synodus foetens Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Synodus intermedius Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Synodus poeyi Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Tatia aulopygia CUYUNI RIVER HALFWAY BETWEEN LANDING AND MOUTH IN ESSEQUIBO, NEAR NABIE WAN (RIVER) 1937 A. FERNANDEZ Y.
Tatia aulopygia HARARUNI CREEK   F.R. LAMONTE
Tatia intermedia HEADWATERS OF ESSEQUIBO RIVER, BETWEEN MARUDI RIVER AND KUYUWINI RIVER MOUTH, JUST ABOVE MOUTH 1937 C.J. FERRARIS
Tatia meesi Lower Potaro river (Essequibo river Drainage), Waratuk cataract, Potaro-Siparuni 1998  
Tenellus trimaculatus Rupununi R., Guyana, 2-3°N, 50°20'W.    
Tenellus trimaculatus Rupununi R., Guyana, ca. 2 to 3°N, 50°20'W.    
Tetragonopterus argenteus DEMERARA RIVER, WISMAR 1934 F.R. LAMONTE
Tetragonopterus argenteus Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Tetragonopterus chalceus ABANDONED FLOODED STONE QUARRY BEHIND GIDEON'S STORE, NORTH BANK MAZARUNI RIVER NEAR KARTABO, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Tetragonopterus chalceus CEBO CREEK, NORTH BANK MAZARUNI RIVER, FEW HUNDRED YARDS EAST OF ST. EDWARDS CHURCH, KARTABO 1982 R.E. SCHMIDT
Tetragonopterus chalceus DEMERARA RIVER, MALALI TO GREAT FALLS 1934 R.P. VARI
Tetragonopterus chalceus DEMERARA RIVER, WISMAR   F.R. LAMONTE
Tetragonopterus chalceus Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Tetragonopterus chalceus MAZARUNI RIVER, KAMAKUSA    
Tetragonopterus chalceus ROCKSTONE, ESSEQUIBO RIVER AT STELLING(PIER), RAILROAD CUT BELOW TOWN, IN SMALL WOODLAND CREEK ON GLUCK ISLAND, ON/AROUND SAND BANK AT BEND ABOVE TOWN 1908 C.H. EIGENMANN
Thayeria ifati Sants du Litang, Franz. Guayana    
Tomeurus gracilis CEBO CREEK, WEST BANK MAZARUNI RIVER, EAST OF ST. EDWARDS CHURCH, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Tomeurus gracilis FOREST STREAM EAST OF BATAVIA LANDING-GUYANA SAWMILLS, SOUTH BANK CUYUNI RIVER 1982 R.E. SCHMIDT
Tomeurus gracilis KARTABO POINT, BETWEEN CUYUNI RIVER MOUTH AND MAZARUNI RIVER MOUTH 1982 R.E. SCHMIDT
Tomeurus gracilis KARTABO POINT, CONFLUENCE MAZARUNI AND CUYUNI RIVERS 1983 R.E. SCHMIDT
Tomeurus gracilis KARTABO POINT, CONFLUENCE OF MAZARUNI AND CUYUNI RIVERS 1983 R.E. SCHMIDT
Tomeurus gracilis KARTABO POINT, MAZARUNI RIVER 1937 F.R. LAMONTE
Tomeurus gracilis MAZARUNI RIVER MOUTH, KARTABO POINT 1982 R.E. SCHMIDT
Tomeurus gracilis SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Tomeurus gracilis SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRY CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Trachelyopterus galeatus Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Trachelyopterus galeatus Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Trachelyopterus galeatus KAMUNI CREEK 1937 F.R. LAMONTE
Trachinocephalus myops Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Trachinotus carolinus GUYANA OFF MOUTH ESQUIBO, NEW AMSTERDAM R    
Trachinotus goodei GEORGETOWN DEMERARA RIVER 1973  
Trachurus lathami Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Trichiurus lepturus Guyana, 40 - 70 miles offshore of the Guyanese coast, between the mouth of the Esquibo and Orinoco Rivers    
Trichomycterus guianense AT LONG BEACH FISHERIES, GEORGETOWN 1970 R. NOVOTNY
Triportheus angulatus Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Triportheus elongatus ESSEQUIBO RIVER, ROCKSTONE 1934 R.P. VARI
Triportheus elongatus ROCKSTONE   R.P. VARI
Triportheus elongatus YARAKITA RIVER 1937 F.R. LAMONTE
Triportheus rotundatus ABANDONED FLOODED STONE QUARRY BEHIND GIDEON'S STORE, NORTH BANK MAZARUNI RIVER NEAR KARTABO, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Triportheus rotundatus ABOUT 100 m OFF KARTABO POINT, CONFLUENCE MAZARUNI AND CUYUNI RIVERS 1983 R.E. SCHMIDT
Triportheus rotundatus ABOUT 100 m OFF KARTABO POINT, CONFLUENCE MAZARUNI AND CUYUNI RIVERS 1983 R.E. SCHMIDT
Triportheus rotundatus ABOUT 100 m OFF KARTABO POINT, CONFLUENCE MAZARUNI AND CUYUNI RIVERS, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Triportheus rotundatus CEBO CREEK, NORTH BANK MAZARUNI RIVER, FEW HUNDRED YARDS EAST OF ST. EDWARDS CHURCH, KARTABO 1982 R.E. SCHMIDT
Triportheus rotundatus CEBO CREEK, WEST BANK MAZARUNI RIVER, EAST OF ST. EDWARDS CHURCH, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Triportheus rotundatus DEMERARA RIVER, WISMAR    
Triportheus rotundatus Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana.   D. Nowosad
Triportheus rotundatus ESSEQUIBO RIVER, ABOVE ROCKSTONE   R. INGLE, M. BUERKLI
Triportheus rotundatus ISOLATED TIDE POOLS IN FOREST, NORTH BANK CUYUNI RIVER 1983 R.E. SCHMIDT
Triportheus rotundatus KARTABO 1920 R.P. VARI
Triportheus rotundatus KARTABO POINT, BETWEEN CUYUNI RIVER MOUTH AND MAZARUNI RIVER MOUTH 1982 R.E. SCHMIDT
Triportheus rotundatus ROCK QUARRY BEHIND GIDEON'S STORE, WEST BANK MAZARUNI RIVER, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Triportheus rotundatus SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Triportheus rotundatus SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRIE CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Triportheus rotundatus SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRY CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT
Triportheus rotundatus SANDBAR ON NORTH BANK CUYUNI RIVER, JUST WEST OF CAOWRIE CREEK MOUTH, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Triportheus rotundatus SOUTH SHORE CUYUNI RIVER, ABOUT 2 MILES FROM KARTABO POINT, ESSEQUIBO DISTRICT 1982 R.E. SCHMIDT
Triportheus rotundatus TRIBUTARY TO UPPER ESSEQUIBO RIVER, ONORA ABOVE BIG FALLS (UNOROWO RIVER) 1937 A. FERNANDEZ Y.
Triportheus rotundatus WHYAPE CREEK, FIRST CREEK ON NORTH BANK CUYUNI RIVER, WEST OF MOUTH 1982 R.E. SCHMIDT
Triportheus rotundatus WISMAR 1935 R.P. VARI
Triportheus rotundatus YARAKITA RIVER 1937 F.R. LAMONTE
Umbrina coroides GUYANA OFF MOUTH ESQUIBO, NEW AMSTERDAM R    
Vandellia beccarii BATAVIA LANDING-GUYANA SAWMILLS, SOUTH BANK CUYUNI RIVER 1982 R.E. SCHMIDT
Vandellia beccarii SANDBAR NORTH BANK CUYUNI RIVER, JUST UPSTREAM OF CAOWRY CREEK, MAZARUNI-POTARO DISTRICT 1983 R.E. SCHMIDT

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