SELECT DISTINCT SPECIES.Genus AS ResultField1, SPECIES.Species AS ResultField2, SPECIES.Author AS ResultField3, SPECIES.FBname AS ResultField4, SPECIES.FamCode AS ResultField5, SPECIES.SpecCode AS ID_Field, SPECIES.Length AS ResultField6, SPECIES.LTypeMaxM AS ResultField7, SPECIES.LengthFemale AS ResultField20, SPECIES.LTypeMaxF AS ResultField21, synonyms.year, FAMILIES.CommonName, FAMILIES.Family FROM (SPECIES LEFT JOIN synonyms ON SPECIES.SpecCode = synonyms.SpecCode) INNER JOIN FAMILIES ON SPECIES.FamCode = FAMILIES.FamCode WHERE (FAMILIES.FamCode =SPECIES.FamCode) AND (synonyms.valid <> 0) AND ((Families.Order)= 'Gymnotiformes') And ((FAMILIES.Class)='Actinopterygii') ORDER BY species.genus, species.species Fish Identification
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Fish Identification: Find Species

Class: Actinopterygii
Order: Gymnotiformes


(See list of species below)



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239 species in
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Photo by Luckenbill, K.

South America
Max. Length 25 cm TL
Adontosternarchus balaenops (Cope, 1878)

Photo by Luckenbill, K.
 
Adontosternarchus balaenops
[]

Photo by Luckenbill, K.

South America
Max. Length 18.6 cm TL
Adontosternarchus clarkae Mago-Leccia, Lundberg & Baskin, 1985

Photo by Luckenbill, K.
 
Adontosternarchus clarkae
[]

Photo by Luckenbill, K.

South America
Max. Length 18.6 cm TL
Adontosternarchus devenanzii Mago-Leccia, Lundberg & Baskin, 1985

Photo by Luckenbill, K.
 
Adontosternarchus devenanzii
[]
No picture found
South America
Max. Length 18.5 cm TL

 
Adontosternarchus duartei
[]

Photo by Sabaj-Perez, M.

South America
Max. Length 21.8 cm TL
Adontosternarchus nebulosus Lundberg & Cox Fernandes, 2007

Photo by Sabaj-Perez, M.
 
Adontosternarchus nebulosus
[]

Photo by Luckenbill, K.

South America
Max. Length 32.2 cm TL
Adontosternarchus sachsi (Peters, 1877)

Photo by Luckenbill, K.
 
Adontosternarchus sachsi
[]
No picture found
South America
Max. Length 21.7 cm TL

 
Akawaio penak
[]
No picture found
South America
Max. Length 32.1 cm TL

 
Apteronotus acidops
[]

Photo by McKenzie, M.

South America
Max. Length 50 cm TL
Apteronotus albifrons (Linnaeus, 1766)

Photo by McKenzie, M.
 
Apteronotus albifrons
[Black ghost]
No picture found
South America
Max. Length 30.8 cm TL

 
Apteronotus apurensis
[]

Photo by Childs, K.

South America
Max. Length 27 cm TL
Apteronotus bonapartii (Castelnau, 1855)

Photo by Childs, K.
 
Apteronotus bonapartii
[]
No picture found
South America
Max. Length 29 cm TL

 
Apteronotus brasiliensis
[]
No picture found
South America

 
Apteronotus camposdapazi
[]
No picture found
South America
Max. Length 28.7 cm TL

 
Apteronotus caudimaculosus
[]

Photo by Galvis, G./Mojica, J.I./Camargo, M.

South America
Max. Length 18.9 cm TL
Apteronotus cuchillejo (Schultz, 1949)

Photo by Galvis, G./Mojica, J.I./Camargo, M.
 
Apteronotus cuchillejo
[]

Photo by Galvis, G./Mojica, J.I./Camargo, M.

South America
Max. Length 39 cm TL
Apteronotus cuchillo Schultz, 1949

Photo by Galvis, G./Mojica, J.I./Camargo, M.
 
Apteronotus cuchillo
[]

Photo by Equipe de Ictiologia do Nupélia

South America
Max. Length 32.8 cm TL
Apteronotus ellisi (Alonso de Arámburu, 1957)

Photo by Equipe de Ictiologia do Nupélia
 
Apteronotus ellisi
[]
No picture found
South America
Max. Length 32 cm SL

 
Apteronotus eschmeyeri
[]
No picture found
South America
Max. Length 19.0 cm TL

 
Apteronotus galvisi
[]
No picture found
South America
Max. Length 25.3 cm TL

 
Apteronotus jurubidae
[]

Photo by Galvis, G./Mojica, J.I./Camargo, M.

South America
Max. Length 26.9 cm TL
Apteronotus leptorhynchus (Ellis, 1912)

Photo by Galvis, G./Mojica, J.I./Camargo, M.
 
Apteronotus leptorhynchus
[]

Photo by Cox Fernandes, C.

South America
Max. Length 33.3 cm TL
Apteronotus lindalvae de Santana & Cox Fernandes, 2012

Photo by Cox Fernandes, C.
 
Apteronotus lindalvae
[]
No picture found
South America
Max. Length 18 cm TL

 
Apteronotus macrolepis
[]
No picture found
South America
Max. Length 26 cm TL

 
Apteronotus macrostomus
[]

Photo by Ospina Pabon, J.G./Agudelo, H.

South America
Max. Length 129 cm TL
Apteronotus magdalenensis (Miles, 1945)

Photo by Ospina Pabon, J.G./Agudelo, H.
 
Apteronotus magdalenensis
[]
No picture found
South America

 
Apteronotus magoi
[]
No picture found
South America
Max. Length 27.3 cm SL

 
Apteronotus mariae
[]
No picture found
South America
Max. Length 22.1 cm TL

 
Apteronotus milesi
[]
No picture found
South America
Max. Length 27.2 cm TL

 
Apteronotus rostratus
[]
No picture found
South America
Max. Length 27 cm TL

 
Apteronotus spurrellii
[]

Photo by de Santana, C.D.

South America
Max. Length 43.5 cm TL
Archolaemus blax Korringa, 1970

Photo by de Santana, C.D.
 
Archolaemus blax
[]

Photo by de Santana, C.D.

South America
Max. Length 34.2 cm TL
Archolaemus ferreirai Vari, de Santana & Wosiacki, 2012

Photo by de Santana, C.D.
 
Archolaemus ferreirai
[]

Photo by de Santana, C.D.

South America
Max. Length 40.2 cm TL
Archolaemus janeae Vari, de Santana & Wosiacki, 2012

Photo by de Santana, C.D.
 
Archolaemus janeae
[]

Photo by de Santana, C.D.

South America
Max. Length 49.7 cm TL
Archolaemus luciae Vari, de Santana & Wosiacki, 2012

Photo by de Santana, C.D.
 
Archolaemus luciae
[]

Photo by de Santana, C.D.

South America

Archolaemus orientalis Stewart, Vari, de Santana & Wosiacki, 2012

Photo by de Santana, C.D.
 
Archolaemus orientalis
[]

Photo by de Santana, C.D.

South America
Max. Length 21.2 cm TL
Archolaemus santosi Vari, de Santana & Wosiacki, 2012

Photo by de Santana, C.D.
 
Archolaemus santosi
[]
No picture found
South America
Max. Length 11.1 cm TL

 
Brachyhypopomus alberti
[]
No picture found
South America
Max. Length 16 cm TL

 
Brachyhypopomus arrayae
[]
No picture found
South America
Max. Length 12.1 cm TL

 
Brachyhypopomus batesi
[]

Photo by Brosse, S.

South America
Max. Length 32 cm SL
Brachyhypopomus beebei (Schultz, 1944)

Photo by Brosse, S.
 
Brachyhypopomus beebei
[]
No picture found
South America
Max. Length 11 cm TL

 
Brachyhypopomus belindae
[]
No picture found
South America
Max. Length 13.5 cm TL

 
Brachyhypopomus benjamini
[]

Photo by John P. Sullivan et al.

South America
Max. Length 23.2 cm TL
Brachyhypopomus bennetti Sullivan, Zuanon & Cox Fernandes, 2013

Photo by John P. Sullivan et al.
 
Brachyhypopomus bennetti
[]
No picture found
South America
Max. Length 15.4 cm TL

 
Brachyhypopomus bombilla
[]
No picture found
South America
Max. Length 34.7 cm TL

 
Brachyhypopomus brevirostris
[Bluntnose knifefish]
No picture found
South America
Max. Length 22.1 cm TL

 
Brachyhypopomus bullocki
[]
No picture found
South America
Max. Length 17.6 cm TL

 
Brachyhypopomus cunia
[]
No picture found
South America
Max. Length 17.5 cm TL

 
Brachyhypopomus diazi
[]

Photo by Corrêa, F.

South America
Max. Length 15.2 cm OT
Brachyhypopomus draco Giora, Malabarba & Crampton, 2008

Photo by Corrêa, F.
 
Brachyhypopomus draco
[]
No picture found
South America
Max. Length 11.7 cm TL

 
Brachyhypopomus flavipomus
[]

Photo by Corrêa, F.

South America
Max. Length 14.9 cm SL
Brachyhypopomus gauderio Giora & Malabarba, 2009

Photo by Corrêa, F.
 
Brachyhypopomus gauderio
[]
No picture found
South America
Max. Length 12.5 cm TL

 
Brachyhypopomus hamiltoni
[]
No picture found
South America
Max. Length 20.3 cm TL

 
Brachyhypopomus hendersoni
[]
No picture found
South America
Max. Length 18.6 cm TL

 
Brachyhypopomus janeiroensis
[]
No picture found
South America

 
Brachyhypopomus jureiae
[]
No picture found
South America
Max. Length 11.9 cm TL

 
Brachyhypopomus menezesi
[]

Photo by Galvis, G./Mojica, J.I./Camargo, M.

Central and South America
Max. Length 17.5 cm TL
Brachyhypopomus occidentalis (Regan, 1914)

Photo by Galvis, G./Mojica, J.I./Camargo, M.
 
Brachyhypopomus occidentalis
[]
No picture found
South America
Max. Length 20.3 cm TL

 
Brachyhypopomus palenque
[]

Photo by Loureiro, M.

South America
Max. Length 18.6 cm TL
Brachyhypopomus pinnicaudatus (Hopkins, 1991)

Photo by Loureiro, M.
 
Brachyhypopomus pinnicaudatus
[]
No picture found
South America
Max. Length 11 cm TL

 
Brachyhypopomus provenzanoi
[]
No picture found
South America
Max. Length 15.6 cm TL

 
Brachyhypopomus regani
[]
No picture found
South America
Max. Length 15.2 cm TL

 
Brachyhypopomus sullivani
[]
No picture found
South America
Max. Length 12 cm TL

 
Brachyhypopomus verdii
[]

Photo by John P. Sullivan et al.

South America
Max. Length 17.5 cm TL
Brachyhypopomus walteri Sullivan, Zuanon & Cox Fernandes, 2013

Photo by John P. Sullivan et al.
 
Brachyhypopomus walteri
[]
No picture found
South America
Max. Length 33.9 cm TL

 
Compsaraia compsus
[]
No picture found
South America
Max. Length 23.5 cm TL

 
Compsaraia iara
[]
No picture found
South America
Max. Length 22.6 cm SL

 
Compsaraia samueli
[]
No picture found
South America
Max. Length 50 cm TL

 
Distocyclus conirostris
[]
No picture found
South America
Max. Length 33.1 cm TL

 
Distocyclus guchereauae
[]
No picture found
South America
Max. Length 20.5 cm TL

 
Eigenmannia antonioi
[]
No picture found
South America
Max. Length 14.8 cm TL

 
Eigenmannia besouro
[]
No picture found
South America
Max. Length 18.6 cm TL

 
Eigenmannia desantanai
[]
No picture found
South America
Max. Length 49.6 cm TL

 
Eigenmannia goajira
[]
No picture found
South America
Max. Length 17.3 cm TL

 
Eigenmannia guairaca
[]

Photo by Alvarez, F.

South America
Max. Length 48.6 cm SL
Eigenmannia humboldtii (Steindachner, 1878)

Photo by Alvarez, F.
 
Eigenmannia humboldtii
[]
No picture found
South America
Max. Length 48.5 cm TL

 
Eigenmannia limbata
[]

Photo by Holm, E.

South America
Max. Length 25.2 cm TL
Eigenmannia macrops (Boulenger, 1897)

Photo by Holm, E.
 
Eigenmannia macrops
[]
No picture found
South America
Max. Length 22.0 cm TL

 
Eigenmannia matintapereira
[]
No picture found
Central America
Max. Length 30.9 cm TL

 
Eigenmannia meeki
[]
No picture found
South America
Max. Length 18.7 cm TL

 
Eigenmannia microstoma
[]
No picture found
South America
Max. Length 14.3 cm TL

 
Eigenmannia muirapinima
[]
No picture found
South America
Max. Length 47.6 cm TL

 
Eigenmannia nigra
[]
No picture found
South America
Max. Length 26.3 cm TL

 
Eigenmannia pavulagem
[]

Photo by Equipe de Ictiologia do Nupélia

South America
Max. Length 25 cm TL
Eigenmannia trilineata López & Castello, 1966

Photo by Equipe de Ictiologia do Nupélia
 
Eigenmannia trilineata
[]
No picture found
South America
Max. Length 20.8 cm TL

 
Eigenmannia vicentespelaea
[]

Photo by Galvis, G./Mojica, J.I./Camargo, M.

South America
Max. Length 44 cm SL
Eigenmannia virescens (Valenciennes, 1836)

Photo by Galvis, G./Mojica, J.I./Camargo, M.
 
Eigenmannia virescens
[Glass knifefish]
No picture found
South America
Max. Length 22.4 cm TL

 
Eigenmannia waiwai
[]

Photo by Fürderer, H.

South America
Max. Length 250 cm SL
Electrophorus electricus (Linnaeus, 1766)

Photo by Fürderer, H.
 
Electrophorus electricus
[Electric eel]
No picture found
South America

 
Gymnorhamphichthys bogardusi
[]
No picture found
South America
Max. Length 18 cm SL

 
Gymnorhamphichthys britskii
[]
No picture found
South America
Max. Length 21.5 cm TL

 
Gymnorhamphichthys hypostomus
[]
No picture found
South America

 
Gymnorhamphichthys petiti
[]

Photo by Sazima, I.

South America
Max. Length 15 cm TL
Gymnorhamphichthys rondoni (Miranda Ribeiro, 1920)

Photo by Sazima, I.
 
Gymnorhamphichthys rondoni
[]
No picture found
South America

 
Gymnorhamphichthys rosamariae
[]

Photo by Holm, E.

South America
Max. Length 30 cm SL
Gymnotus anguillaris Hoedeman, 1962

Photo by Holm, E.
 
Gymnotus anguillaris
[]
No picture found
South America
Max. Length 55 cm TL

 
Gymnotus arapaima
[]
No picture found
South America

 
Gymnotus ardilai
[]
No picture found
South America
Max. Length 27.6 cm TL

 
Gymnotus bahianus
[]
No picture found
South America
Max. Length 17.9 cm TL

 
Gymnotus capanema
[]
No picture found
South America
Max. Length 15.8 cm TL

 
Gymnotus capitimaculatus
[]

Photo by Landines, M.

Central and South America
Max. Length 76 cm TL
Gymnotus carapo Linnaeus, 1758

Photo by Landines, M.
 
Gymnotus carapo
[Banded knifefish]

Photo by JJPhoto

South America
Max. Length 31.6 cm TL
Gymnotus cataniapo Mago-Leccia, 1994

Photo by JJPhoto
 
Gymnotus cataniapo
[]
No picture found
South America
Max. Length 27.5 cm SL

 
Gymnotus chaviro
[]
No picture found
South America
Max. Length 24.3 cm TL

 
Gymnotus chimarrao
[]
No picture found
South America
Max. Length 26 cm TL

 
Gymnotus choco
[]
No picture found
South America
Max. Length 30 cm TL

 
Gymnotus coatesi
[]
No picture found
South America
Max. Length 34.5 cm SL

 
Gymnotus coropinae
[]
No picture found
South America
Max. Length 30.5 cm TL

 
Gymnotus cuia
[]
No picture found
South America
Max. Length 23.5 cm TL

 
Gymnotus curupira
[]

Photo by Molina, A.

Central America

Gymnotus cylindricus La Monte, 1935

Photo by Molina, A.
 
Gymnotus cylindricus
[]
No picture found
South America
Max. Length 12.5 cm TL

 
Gymnotus diamantinensis
[]
No picture found
South America
Max. Length 30.9 cm TL

 
Gymnotus esmeraldas
[]
No picture found
South America
Max. Length 31.2 cm SL

 
Gymnotus henni
[]

Photo by Equipe de Ictiologia do Nupélia

South America
Max. Length 99.8 cm TL
Gymnotus inaequilabiatus (Valenciennes, 1839)

Photo by Equipe de Ictiologia do Nupélia
 
Gymnotus inaequilabiatus
[]
No picture found
South America
Max. Length 12.1 cm TL

 
Gymnotus interruptus
[]
No picture found
South America
Max. Length 20.1 cm TL

 
Gymnotus javari
[]
No picture found
South America
Max. Length 13.5 cm TL

 
Gymnotus jonasi
[]

Photo by Molina, A.

Central America.

Gymnotus maculosus Albert & Miller, 1995

Photo by Molina, A.
 
Gymnotus maculosus
[Spotted knifefish]
No picture found
South America
Max. Length 24.3 cm TL

 
Gymnotus mamiraua
[]
No picture found
South America
Max. Length 10 cm TL

 
Gymnotus melanopleura
[]
No picture found
South America
Max. Length 21.5 cm TL

 
Gymnotus obscurus
[]

Photo by Albert, J.S.

South America
Max. Length 28.6 cm TL
Gymnotus omarorum Richer-de-Forges, Crampton & Albert, 2009

Photo by Albert, J.S.
 
Gymnotus omarorum
[]
No picture found
South America
Max. Length 12 cm TL

 
Gymnotus onca
[]
No picture found
Central America
Max. Length 23.6 cm TL

 
Gymnotus panamensis
[]

Photo by Equipe de Ictiologia do Nupélia

South America
Max. Length 26 cm TL
Gymnotus pantanal Fernandes, Albert, Daniel-Silva, Lopes, Crampton & Almeida-Toledo, 2005

Photo by Equipe de Ictiologia do Nupélia
 
Gymnotus pantanal
[]

Photo by Sazima, I.

South America
Max. Length 23.6 cm TL
Gymnotus pantherinus (Steindachner, 1908)

Photo by Sazima, I.
 
Gymnotus pantherinus
[]

Photo by Equipe de Ictiologia do Nupélia

South America
Max. Length 24 cm SL
Gymnotus paraguensis Albert & Crampton, 2003

Photo by Equipe de Ictiologia do Nupélia
 
Gymnotus paraguensis
[]
No picture found
South America
Max. Length 28.1 cm TL

 
Gymnotus pedanopterus
[]
No picture found
South America
Max. Length 14.2 cm TL

 
Gymnotus stenoleucus
[]

Photo by Sazima, I.

South America
Max. Length 42 cm SL
Gymnotus sylvius Albert & Fernandes-Matioli, 1999

Photo by Sazima, I.
 
Gymnotus sylvius
[]
No picture found
South America
Max. Length 41.1 cm TL

 
Gymnotus tigre
[]

Photo by Maxime et al.

South America
Max. Length 24 cm TL
Gymnotus tiquie Maxime, Lima & Albert, 2011

Photo by Maxime et al.
 
Gymnotus tiquie
[Tiquie banded knifefish]
No picture found
South America
Max. Length 19 cm TL

 
Gymnotus ucamara
[]
No picture found
South America
Max. Length 28.5 cm TL

 
Gymnotus varzea
[]

Photo by Brosse, S.

South America
Max. Length 50 cm SL
Hypopomus artedi (Kaup, 1856)

Photo by Brosse, S.
 
Hypopomus artedi
[]
No picture found
South America
Max. Length 9.2 cm TL

 
Hypopygus benoneae
[]
No picture found
South America
Max. Length 5.9 cm TL

 
Hypopygus hoedemani
[Hoedeman's Hypopygus]
No picture found
South America
Max. Length 9 cm TL

 
Hypopygus isbruckeri
[Isbrücker's Hypopygus]
No picture found
South America
Max. Length 10 cm TL

 
Hypopygus lepturus
[]
No picture found
South America
Max. Length 6.2 cm TL

 
Hypopygus minissimus
[]
No picture found
South America
Max. Length 12.2 cm TL

 
Hypopygus neblinae
[]
No picture found
South America
Max. Length 9.6 cm TL

 
Hypopygus nijsseni
[Nijssen's Hypopygus]
No picture found
South America
Max. Length 11.4 cm TL

 
Hypopygus ortegai
[Ortega's Hypopygus]
No picture found
South America
Max. Length 36 cm TL

 
Iracema caiana
[]
No picture found
South America
Max. Length 22 cm TL

 
Japigny kirschbaum
[]
No picture found
South America
Max. Length 22.6 cm TL

 
Magosternarchus duccis
[]
No picture found
South America
Max. Length 19.9 cm TL

 
Magosternarchus raptor
[]
No picture found
South America
Max. Length 23.8 cm TL

 
Megadontognathus cuyuniense
[]
No picture found
South America
Max. Length 16 cm TL

 
Megadontognathus kaitukaensis
[]
No picture found
South America
Max. Length 12 cm TL

 
Microsternarchus bilineatus
[]

Photo by Cox Fernandes, C.

South America
Max. Length 5.3 cm TL
Microsternarchus brevis Cox Fernandes, Nogueira, Williston & Alves-Gomes, 2015

Photo by Cox Fernandes, C.
 
Microsternarchus brevis
[]
No picture found
South America
Max. Length 44 cm TL

 
Orthosternarchus tamandua
[]
No picture found
South America
Max. Length 38.1 cm TL

 
Parapteronotus hasemani
[]
No picture found
South America
Max. Length 15.2 cm SL

 
Pariosternarchus amazonensis
[]
No picture found
South America
Max. Length 30.8 cm TL

 
Platyurosternarchus crypticus
[]
No picture found
South America
Max. Length 40 cm TL

 
Platyurosternarchus macrostomus
[]
No picture found
Known from the main chann
Max. Length 18.4 cm TL

 
Porotergus duende
[]
No picture found
South America
Max. Length 24 cm TL

 
Porotergus gimbeli
[]
No picture found
South America
Max. Length 85 cm TL

 
Porotergus gymnotus
[]

Photo by Nogueira, A.

South America
Max. Length 13.8 cm TL
Procerusternarchus pixuna Cox Fernandes, Nogueira & Alves-Gomes, 2014

Photo by Nogueira, A.
 
Procerusternarchus pixuna
[]
No picture found
South America
Max. Length 11.7 cm TL

 
Racenisia fimbriipinna
[]
No picture found
South America
Max. Length 31 cm TL

 
Rhabdolichops caviceps
[]
No picture found
South America
Max. Length 27.6 cm TL

 
Rhabdolichops eastwardi
[]
No picture found
South America
Max. Length 29.2 cm TL

 
Rhabdolichops electrogrammus
[]
No picture found
South America
Max. Length 31.9 cm TL

 
Rhabdolichops jegui
[]
No picture found
South America
Max. Length 24.1 cm TL

 
Rhabdolichops lundbergi
[]
No picture found
South America
Max. Length 16.1 cm SL

 
Rhabdolichops navalha
[]
No picture found
South America
Max. Length 43.1 cm TL

 
Rhabdolichops nigrimans
[]
No picture found
South America
Max. Length 20.7 cm TL

 
Rhabdolichops stewarti
[]
No picture found
South America
Max. Length 49 cm TL

 
Rhabdolichops troscheli
[]
No picture found
South America
Max. Length 22.5 cm TL

 
Rhabdolichops zareti
[]
No picture found
South America

 
Rhamphichthys apurensis
[]
No picture found
South America
Max. Length 67.3 cm SL

 
Rhamphichthys atlanticus
[]
No picture found
South America
Max. Length 45 cm SL

 
Rhamphichthys drepanium
[]

Photo by Equipe de Ictiologia do Nupélia

South America
Max. Length 26.7 cm TL
Rhamphichthys hahni (Meinken, 1937)

Photo by Equipe de Ictiologia do Nupélia
 
Rhamphichthys hahni
[]
No picture found
South America
Max. Length 40 cm SL

 
Rhamphichthys heleios
[]
No picture found
South America
Max. Length 54 cm TL

 
Rhamphichthys lineatus
[]
No picture found
South America
Max. Length 80 cm SL

 
Rhamphichthys longior
[]
No picture found
South America
Max. Length 65 cm TL

 
Rhamphichthys marmoratus
[]
No picture found
South America

 
Rhamphichthys pantherinus
[]

Photo by Mensch, R.

South America
Max. Length 100 cm TL
Rhamphichthys rostratus (Linnaeus, 1766)

Photo by Mensch, R.
 
Rhamphichthys rostratus
[]

Photo by Sazima, I.

South America
Max. Length 20.9 cm TL
Steatogenys duidae (La Monte, 1929)

Photo by Sazima, I.
 
Steatogenys duidae
[]
No picture found
South America
Max. Length 29.4 cm TL

 
Steatogenys elegans
[Barred knifefish]
No picture found
South America
Max. Length 40.5 cm TL

 
Steatogenys ocellatus
[]
No picture found
South America
Max. Length 9.8 cm TL

 
Stegostenopos cryptogenes
[]
No picture found
South America
Max. Length 18.5 cm TL

 
Sternarchella calhamazon
[]
No picture found
South America
Max. Length 25.3 cm TL

 
Sternarchella curvioperculata
[]
No picture found
South America
Max. Length 30 cm TL

 
Sternarchella orthos
[]

Photo by Mensch, R.

South America
Max. Length 40 cm TL
Sternarchella schotti (Steindachner, 1868)

Photo by Mensch, R.
 
Sternarchella schotti
[]
No picture found
South America
Max. Length 40 cm TL

 
Sternarchella sima
[]
No picture found
South America
Max. Length 22.4 cm TL

 
Sternarchella terminalis
[]
No picture found
South America
Max. Length 21.4 cm TL

 
Sternarchogiton labiatus
[]
No picture found
South America
Max. Length 25 cm TL

 
Sternarchogiton nattereri
[]
No picture found
South America
Max. Length 30 cm TL

 
Sternarchogiton porcinum
[]
No picture found
South America
Max. Length 21.7 cm SL

 
Sternarchogiton preto
[]
No picture found
The single known sample o
Max. Length 17.8 cm TL

 
Sternarchogiton zuanoni
[]
No picture found
South America
Max. Length 45.5 cm TL

 
Sternarchorhamphus muelleri
[]
No picture found
South America
Max. Length 60 cm TL

 
Sternarchorhynchus axelrodi
[Axelrod’s tube-snouted ghost knifefish]
No picture found
South America
Max. Length 26.1 cm TL

 
Sternarchorhynchus britskii
[Britski’s tube-snouted ghost knifefish]
No picture found
South America
Max. Length 22.6 cm TL

 
Sternarchorhynchus caboclo
[Cabocolo tube-snouted ghost knifefish]
No picture found
South America
Max. Length 16.4 cm TL

 
Sternarchorhynchus chaoi
[Chao’s tube-snouted ghost knifefish]
No picture found
South America
Max. Length 33.1 cm TL

 
Sternarchorhynchus cramptoni
[Crampton’s tube-snouted ghost knifefish]
No picture found
South America
Max. Length 18.1 cm TL

 
Sternarchorhynchus curumim
[Curumim tube-snouted ghost knifefish]
No picture found
South America
Max. Length 40.6 cm TL

 
Sternarchorhynchus curvirostris
[]
No picture found
South America
Max. Length 20.1 cm TL

 
Sternarchorhynchus freemani
[Freeman’s tube-snouted ghost knifefish]
No picture found
South America
Max. Length 20 cm TL

 
Sternarchorhynchus galibi
[Galibi tube-snouted ghost knifefish]
No picture found
South America
Max. Length 15.2 cm TL

 
Sternarchorhynchus gnomus
[Gnomus tube-snouted ghost knifefish]
No picture found
South America
Max. Length 30.6 cm TL

 
Sternarchorhynchus goeldii
[Goeldi’s tube-snouted ghost knifefish]
No picture found
South America
Max. Length 24.9 cm TL

 
Sternarchorhynchus hagedornae
[Hagedorn’s tube-snouted ghost knifefish]
No picture found
South America
Max. Length 24.6 cm TL

 
Sternarchorhynchus higuchii
[Higuchi’s tube-snouted ghost knifefish]
No picture found
South America
Max. Length 22.2 cm TL

 
Sternarchorhynchus inpai
[Inpa tube-snouted ghost knifefish]
No picture found
South America
Max. Length 20 cm TL

 
Sternarchorhynchus jaimei
[Jamei’s tube-snouted ghost knifefish]
No picture found
South America
Max. Length 19.7 cm TL

 
Sternarchorhynchus kokraimoro
[Kokraimoro tube-snouted ghost knifefish]
No picture found
South America
Max. Length 19.2 cm TL

 
Sternarchorhynchus mareikeae
[Mareike’s tube-snouted ghost knifefish]
No picture found
South America
Max. Length 27.8 cm TL

 
Sternarchorhynchus marreroi
[Marrero’s tube-snouted ghost knifefish]
No picture found
South America
Max. Length 19.2 cm TL

 
Sternarchorhynchus mendesi
[Mendes’ tube-snouted ghost knifefish]
No picture found
South America
Max. Length 24.9 cm TL

 
Sternarchorhynchus mesensis
[Mesensis tube-snouted ghost knifefish]
No picture found
South America
Max. Length 25.8 cm TL

 
Sternarchorhynchus montanus
[Montanus tube-snouted ghost knifefish]
No picture found
South America
Max. Length 54 cm TL

 
Sternarchorhynchus mormyrus
[Mormyrus tube-snouted ghost knifefish]

Photo by Yuri Hooker/WWF-OPP

South America
Max. Length 47 cm TL
Sternarchorhynchus oxyrhynchus (Müller & Troschel, 1849)

Photo by Yuri Hooker/WWF-OPP
 
Sternarchorhynchus oxyrhynchus
[Oxyrhynchus tube-snouted ghost knifefish]
No picture found
South America
Max. Length 38.2 cm TL

 
Sternarchorhynchus retzeri
[Retzer’s tube-snouted ghost knifefish]
No picture found
South America
Max. Length 41.7 cm TL

 
Sternarchorhynchus roseni
[Rosen’s tube-snouted ghost knifefish]
No picture found
South America
Max. Length 11.6 cm TL

 
Sternarchorhynchus schwassmanni
[]
No picture found
South America
Max. Length 16.9 cm TL

 
Sternarchorhynchus severii
[Severi’s tube-snouted ghost knifefish]
No picture found
South America
Max. Length 37.4 cm TL

 
Sternarchorhynchus starksi
[Stark’s tube-snouted ghost knifefish]
No picture found
South America
Max. Length 22.9 cm TL

 
Sternarchorhynchus stewarti
[Stewart’s tube-snouted ghost knifefish]
No picture found
South America
Max. Length 31 cm TL

 
Sternarchorhynchus taphorni
[Taphorn’s tube-snouted ghost knifefish]
No picture found
South America
Max. Length 13.6 cm TL

 
Sternarchorhynchus villasboasi
[Villasboas’ tube-snouted ghost knifefish]
No picture found
South America
Max. Length 28 cm TL

 
Sternarchorhynchus yepezi
[Yepez’ tube-snouted ghost knifefish]

Photo by JJPhoto

Central and South America
Max. Length 81 cm SL
Sternopygus aequilabiatus (Humboldt, 1805)

Photo by JJPhoto
 
Sternopygus aequilabiatus
[]

Photo by Revelo, W. & Laaz, E.

South America
Max. Length 56 cm TL
Sternopygus arenatus (Eydoux & Souleyet, 1850)

Photo by Revelo, W. & Laaz, E.
 
Sternopygus arenatus
[]
No picture found
South America
Max. Length 23.3 cm TL

 
Sternopygus astrabes
[]
No picture found
South America
Max. Length 49.2 cm TL

 
Sternopygus branco
[]
No picture found
South America
Max. Length 19.6 cm TL

 
Sternopygus castroi
[]

Photo by Galtier Delbosc, M.

South America
Max. Length 140.5 cm TL
Sternopygus macrurus (Bloch & Schneider, 1801)

Photo by Galtier Delbosc, M.
 
Sternopygus macrurus
[Longtail knifefish]
No picture found
South America
Max. Length 56 cm TL

 
Sternopygus obtusirostris
[]
No picture found
South America
Max. Length 50 cm TL

 
Sternopygus pejeraton
[]
No picture found
South America
Max. Length 52.5 cm TL

 
Sternopygus xingu
[]
No picture found
South America
Max. Length 19.6 cm TL

 
Tembeassu marauna
[]



239 species

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Scientific Name English Name Distribution Max. Length (cm) Year
Adontosternarchus balaenops South America 25 TL 1878
Adontosternarchus clarkae South America 18.6 TL 1985
Adontosternarchus devenanzii South America 18.6 TL 1985
Adontosternarchus duartei South America 18.5 TL 2012
Adontosternarchus nebulosus South America 21.8 TL 2007
Adontosternarchus sachsi South America 32.2 TL 1877
Akawaio penak South America 21.7 TL 2013
Apteronotus acidops South America 32.1 TL 2011
Apteronotus albifrons Black ghost South America 50 TL 1766
Apteronotus apurensis South America 30.8 TL 1968
Apteronotus bonapartii South America 27 TL 1855
Apteronotus brasiliensis South America 29 TL 1852
Apteronotus camposdapazi South America 2006
Apteronotus caudimaculosus South America 28.7 TL 2003
Apteronotus cuchillejo South America 18.9 TL 1949
Apteronotus cuchillo South America 39 TL 1949
Apteronotus ellisi South America 32.8 TL 1957
Apteronotus eschmeyeri South America 32 SL 2004
Apteronotus galvisi South America 19.0 TL 2007
Apteronotus jurubidae South America 25.3 TL 1944
Apteronotus leptorhynchus South America 26.9 TL 1912
Apteronotus lindalvae South America 33.3 TL 2012
Apteronotus macrolepis South America 18 TL 1881
Apteronotus macrostomus South America 26 TL 1943
Apteronotus magdalenensis South America 129 TL 1945
Apteronotus magoi South America 2006
Apteronotus mariae South America 27.3 SL 1914
Apteronotus milesi South America 22.1 TL 2005
Apteronotus rostratus South America 27.2 TL 1913
Apteronotus spurrellii South America 27 TL 1914
Archolaemus blax South America 43.5 TL 1970
Archolaemus ferreirai South America 34.2 TL 2012
Archolaemus janeae South America 40.2 TL 2012
Archolaemus luciae South America 49.7 TL 2012
Archolaemus orientalis South America 2012
Archolaemus santosi South America 21.2 TL 2012
Brachyhypopomus alberti South America 11.1 TL 2017
Brachyhypopomus arrayae South America 16 TL 2017
Brachyhypopomus batesi South America 12.1 TL 2017
Brachyhypopomus beebei South America 32 SL 1944
Brachyhypopomus belindae South America 11 TL 2017
Brachyhypopomus benjamini South America 13.5 TL 2017
Brachyhypopomus bennetti South America 23.2 TL 2013
Brachyhypopomus bombilla South America 15.4 TL 2006
Brachyhypopomus brevirostris Bluntnose knifefish South America 34.7 TL 1868
Brachyhypopomus bullocki South America 22.1 TL 2009
Brachyhypopomus cunia South America 17.6 TL 2017
Brachyhypopomus diazi South America 17.5 TL 1972
Brachyhypopomus draco South America 15.2 OT 2008
Brachyhypopomus flavipomus South America 11.7 TL 2017
Brachyhypopomus gauderio South America 14.9 SL 2009
Brachyhypopomus hamiltoni South America 12.5 TL 2017
Brachyhypopomus hendersoni South America 20.3 TL 2017
Brachyhypopomus janeiroensis South America 18.6 TL 1992
Brachyhypopomus jureiae South America 2003
Brachyhypopomus menezesi South America 11.9 TL 2017
Brachyhypopomus occidentalis Central and South America 17.5 TL 1914
Brachyhypopomus palenque South America 20.3 TL 2017
Brachyhypopomus pinnicaudatus South America 18.6 TL 1991
Brachyhypopomus provenzanoi South America 11 TL 2017
Brachyhypopomus regani South America 15.6 TL 2017
Brachyhypopomus sullivani South America 15.2 TL 2017
Brachyhypopomus verdii South America 12 TL 2017
Brachyhypopomus walteri South America 17.5 TL 2013
Compsaraia compsus South America 33.9 TL 1994
Compsaraia iara South America 23.5 TL 2017
Compsaraia samueli South America 22.6 SL 2009
Distocyclus conirostris South America 50 TL 1942
Distocyclus guchereauae South America 33.1 TL 2014
Eigenmannia antonioi South America 20.5 TL 2015
Eigenmannia besouro South America 14.8 TL 2016
Eigenmannia desantanai South America 18.6 TL 2015
Eigenmannia goajira South America 49.6 TL 1949
Eigenmannia guairaca South America 17.3 TL 2015
Eigenmannia humboldtii South America 48.6 SL 1878
Eigenmannia limbata South America 48.5 TL 1903
Eigenmannia macrops South America 25.2 TL 1897
Eigenmannia matintapereira South America 22.0 TL 2015
Eigenmannia meeki Central America 30.9 TL 2017
Eigenmannia microstoma South America 18.7 TL 1852
Eigenmannia muirapinima South America 14.3 TL 2015
Eigenmannia nigra South America 47.6 TL 1994
Eigenmannia pavulagem South America 26.3 TL 2015
Eigenmannia trilineata South America 25 TL 1966
Eigenmannia vicentespelaea South America 20.8 TL 1996
Eigenmannia virescens Glass knifefish South America 44 SL 1836
Eigenmannia waiwai South America 22.4 TL 2015
Electrophorus electricus Electric eel South America 250 SL 1766
Gymnorhamphichthys bogardusi South America 2005
Gymnorhamphichthys britskii South America 18 SL 2011
Gymnorhamphichthys hypostomus South America 21.5 TL 1912
Gymnorhamphichthys petiti South America 1964
Gymnorhamphichthys rondoni South America 15 TL 1920
Gymnorhamphichthys rosamariae South America 1989
Gymnotus anguillaris South America 30 SL 1962
Gymnotus arapaima South America 55 TL 2001
Gymnotus ardilai South America 2004
Gymnotus bahianus South America 27.6 TL 1996
Gymnotus capanema South America 17.9 TL 2012
Gymnotus capitimaculatus South America 15.8 TL 2014
Gymnotus carapo Banded knifefish Central and South America 76 TL 1758
Gymnotus cataniapo South America 31.6 TL 1994
Gymnotus chaviro South America 27.5 SL 2009
Gymnotus chimarrao South America 24.3 TL 2008
Gymnotus choco South America 26 TL 2003
Gymnotus coatesi South America 30 TL 1935
Gymnotus coropinae South America 34.5 SL 1962
Gymnotus cuia South America 30.5 TL 2018
Gymnotus curupira South America 23.5 TL 2005
Gymnotus cylindricus Central America 1935
Gymnotus diamantinensis South America 12.5 TL 2002
Gymnotus esmeraldas South America 30.9 TL 2003
Gymnotus henni South America 31.2 SL 2003
Gymnotus inaequilabiatus South America 99.8 TL 1839
Gymnotus interruptus South America 12.1 TL 2012
Gymnotus javari South America 20.1 TL 2003
Gymnotus jonasi South America 13.5 TL 2001
Gymnotus maculosus Spotted knifefish Central America. 1995
Gymnotus mamiraua South America 24.3 TL 2001
Gymnotus melanopleura South America 10 TL 2001
Gymnotus obscurus South America 21.5 TL 2005
Gymnotus omarorum South America 28.6 TL 2009
Gymnotus onca South America 12 TL 2001
Gymnotus panamensis Central America 23.6 TL 2003
Gymnotus pantanal South America 26 TL 2005
Gymnotus pantherinus South America 23.6 TL 1908
Gymnotus paraguensis South America 24 SL 2003
Gymnotus pedanopterus South America 28.1 TL 1994
Gymnotus stenoleucus South America 14.2 TL 1994
Gymnotus sylvius South America 42 SL 1999
Gymnotus tigre South America 41.1 TL 2003
Gymnotus tiquie Tiquie banded knifefish South America 24 TL 2011
Gymnotus ucamara South America 19 TL 2003
Gymnotus varzea South America 28.5 TL 2005
Hypopomus artedi South America 50 SL 1856
Hypopygus benoneae South America 9.2 TL 2013
Hypopygus hoedemani Hoedeman's Hypopygus South America 5.9 TL 2011
Hypopygus isbruckeri Isbrücker's Hypopygus South America 9 TL 2011
Hypopygus lepturus South America 10 TL 1962
Hypopygus minissimus South America 6.2 TL 2011
Hypopygus neblinae South America 12.2 TL 1994
Hypopygus nijsseni Nijssen's Hypopygus South America 9.6 TL 2011
Hypopygus ortegai Ortega's Hypopygus South America 11.4 TL 2011
Iracema caiana South America 36 TL 1996
Japigny kirschbaum South America 22 TL 2011
Magosternarchus duccis South America 22.6 TL 1996
Magosternarchus raptor South America 19.9 TL 1996
Megadontognathus cuyuniense South America 23.8 TL 1994
Megadontognathus kaitukaensis South America 16 TL 1999
Microsternarchus bilineatus South America 12 TL 1968
Microsternarchus brevis South America 5.3 TL 2015
Orthosternarchus tamandua South America 44 TL 1898
Parapteronotus hasemani South America 38.1 TL 1913
Pariosternarchus amazonensis South America 15.2 SL 2006
Platyurosternarchus crypticus South America 30.8 TL 2009
Platyurosternarchus macrostomus South America 40 TL 1870
Porotergus duende Known from the main chann 18.4 TL 2010
Porotergus gimbeli South America 24 TL 1912
Porotergus gymnotus South America 85 TL 1912
Procerusternarchus pixuna South America 13.8 TL 2014
Racenisia fimbriipinna South America 11.7 TL 1994
Rhabdolichops caviceps South America 31 TL 1968
Rhabdolichops eastwardi South America 27.6 TL 1986
Rhabdolichops electrogrammus South America 29.2 TL 1986
Rhabdolichops jegui South America 31.9 TL 2000
Rhabdolichops lundbergi South America 24.1 TL 2006
Rhabdolichops navalha South America 16.1 SL 2006
Rhabdolichops nigrimans South America 43.1 TL 2006
Rhabdolichops stewarti South America 20.7 TL 1986
Rhabdolichops troscheli South America 49 TL 1856
Rhabdolichops zareti South America 22.5 TL 1986
Rhamphichthys apurensis South America 1968
Rhamphichthys atlanticus South America 67.3 SL 1999
Rhamphichthys drepanium South America 45 SL 1999
Rhamphichthys hahni South America 26.7 TL 1937
Rhamphichthys heleios South America 40 SL 2015
Rhamphichthys lineatus South America 54 TL 1855
Rhamphichthys longior South America 80 SL 1999
Rhamphichthys marmoratus South America 65 TL 1855
Rhamphichthys pantherinus South America 1855
Rhamphichthys rostratus South America 100 TL 1766
Steatogenys duidae South America 20.9 TL 1929
Steatogenys elegans Barred knifefish South America 29.4 TL 1880
Steatogenys ocellatus South America 40.5 TL 2004
Stegostenopos cryptogenes South America 9.8 TL 1997
Sternarchella calhamazon South America 18.5 TL 2013
Sternarchella curvioperculata South America 25.3 TL 1968
Sternarchella orthos South America 30 TL 1994
Sternarchella schotti South America 40 TL 1868
Sternarchella sima South America 40 TL 1913
Sternarchella terminalis South America 22.4 TL 1942
Sternarchogiton labiatus South America 21.4 TL 2007
Sternarchogiton nattereri South America 25 TL 1868
Sternarchogiton porcinum South America 30 TL 1942
Sternarchogiton preto South America 21.7 SL 2007
Sternarchogiton zuanoni The single known sample o 17.8 TL 2010
Sternarchorhamphus muelleri South America 45.5 TL 1881
Sternarchorhynchus axelrodi Axelrod’s tube-snouted ghost knifefish South America 60 TL 2010
Sternarchorhynchus britskii Britski’s tube-snouted ghost knifefish South America 26.1 TL 2000
Sternarchorhynchus caboclo Cabocolo tube-snouted ghost knifefish South America 22.6 TL 2006
Sternarchorhynchus chaoi Chao’s tube-snouted ghost knifefish South America 16.4 TL 2010
Sternarchorhynchus cramptoni Crampton’s tube-snouted ghost knifefish South America 33.1 TL 2010
Sternarchorhynchus curumim Curumim tube-snouted ghost knifefish South America 18.1 TL 2006
Sternarchorhynchus curvirostris South America 40.6 TL 1887
Sternarchorhynchus freemani Freeman’s tube-snouted ghost knifefish South America 20.1 TL 2010
Sternarchorhynchus galibi Galibi tube-snouted ghost knifefish South America 20 TL 2010
Sternarchorhynchus gnomus Gnomus tube-snouted ghost knifefish South America 15.2 TL 2006
Sternarchorhynchus goeldii Goeldi’s tube-snouted ghost knifefish South America 30.6 TL 2010
Sternarchorhynchus hagedornae Hagedorn’s tube-snouted ghost knifefish South America 24.9 TL 2010
Sternarchorhynchus higuchii Higuchi’s tube-snouted ghost knifefish South America 24.6 TL 2010
Sternarchorhynchus inpai Inpa tube-snouted ghost knifefish South America 22.2 TL 2010
Sternarchorhynchus jaimei Jamei’s tube-snouted ghost knifefish South America 20 TL 2010
Sternarchorhynchus kokraimoro Kokraimoro tube-snouted ghost knifefish South America 19.7 TL 2010
Sternarchorhynchus mareikeae Mareike’s tube-snouted ghost knifefish South America 19.2 TL 2010
Sternarchorhynchus marreroi Marrero’s tube-snouted ghost knifefish South America 27.8 TL 2010
Sternarchorhynchus mendesi Mendes’ tube-snouted ghost knifefish South America 19.2 TL 2010
Sternarchorhynchus mesensis Mesensis tube-snouted ghost knifefish South America 24.9 TL 2000
Sternarchorhynchus montanus Montanus tube-snouted ghost knifefish South America 25.8 TL 2010
Sternarchorhynchus mormyrus Mormyrus tube-snouted ghost knifefish South America 54 TL 1868
Sternarchorhynchus oxyrhynchus Oxyrhynchus tube-snouted ghost knifefish South America 47 TL 1849
Sternarchorhynchus retzeri Retzer’s tube-snouted ghost knifefish South America 38.2 TL 2010
Sternarchorhynchus roseni Rosen’s tube-snouted ghost knifefish South America 41.7 TL 1994
Sternarchorhynchus schwassmanni South America 11.6 TL 2010
Sternarchorhynchus severii Severi’s tube-snouted ghost knifefish South America 16.9 TL 2006
Sternarchorhynchus starksi Stark’s tube-snouted ghost knifefish South America 37.4 TL 2010
Sternarchorhynchus stewarti Stewart’s tube-snouted ghost knifefish South America 22.9 TL 2010
Sternarchorhynchus taphorni Taphorn’s tube-snouted ghost knifefish South America 31 TL 2010
Sternarchorhynchus villasboasi Villasboas’ tube-snouted ghost knifefish South America 13.6 TL 2010
Sternarchorhynchus yepezi Yepez’ tube-snouted ghost knifefish South America 28 TL 2010
Sternopygus aequilabiatus Central and South America 81 SL 1805
Sternopygus arenatus South America 56 TL 1850
Sternopygus astrabes South America 23.3 TL 1994
Sternopygus branco South America 49.2 TL 2004
Sternopygus castroi South America 19.6 TL 2000
Sternopygus macrurus Longtail knifefish South America 140.5 TL 1801
Sternopygus obtusirostris South America 56 TL 1881
Sternopygus pejeraton South America 50 TL 1949
Sternopygus xingu South America 52.5 TL 1996
Tembeassu marauna South America 19.6 TL 1998



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cfm script by eagbayani, 30.11.04, ,  php script by cmilitante, 05/11/2010 ,  last modified by cmilitante, 14/03/2013