| อันดับ | วงศ์ | ชนิด | Occurrence | ชื่อฐานข้อมูลปลา | Name(s) in Territory |
|---|---|---|---|---|---|
| Characiformes | Anostomidae | Abramites hypselonotus | native | Marbled headstander | |
| Characiformes | Characidae | Acanthocharax microlepis | native | ||
| Siluriformes | Doradidae | Acanthodoras cataphractus | native | Spiny catfish | |
| Siluriformes | Doradidae | Acanthodoras spinosissimus | native | Talking catfish | |
| Cichliformes | Cichlidae | Acarichthys heckelii | native | Threadfin acara | |
| Cichliformes | Cichlidae | Acaronia nassa | native | Bigeye cichlid | |
| Characiformes | Acestrorhynchidae | Acestrorhynchus falcatus | native | ||
| Characiformes | Acestrorhynchidae | Acestrorhynchus falcirostris | native | ||
| Characiformes | Acestrorhynchidae | Acestrorhynchus microlepis | native | Pike characin | |
| Characiformes | Acestrorhynchidae | Acestrorhynchus nasutus | native | ||
| Pleuronectiformes | Achiridae | Achirus achirus | native | Drab sole | |
| Characiformes | Serrasalmidae | Acnodon oligacanthus | native | ||
| Cichliformes | Cichlidae | Aequidens potaroensis | endemic | ||
| Cichliformes | Cichlidae | Aequidens tetramerus | native | Saddle cichlid | |
| Siluriformes | Auchenipteridae | Ageneiosus inermis | native | Manduba | |
| Siluriformes | Auchenipteridae | Ageneiosus marmoratus | native | Bottlenose catfish | |
| Siluriformes | Auchenipteridae | Ageneiosus ucayalensis | native | ||
| Characiformes | Triportheidae | Agoniates halecinus | native | ||
| Gymnotiformes | Hypopomidae | Akawaio penak | endemic | ||
| Siluriformes | Doradidae | Amblydoras affinis | native | Guaporé thorny catfish | |
| Characiformes | Crenuchidae | Ammocryptocharax lateralis | native | ||
| Characiformes | Crenuchidae | Ammocryptocharax vintonae | native | ||
| Cyprinodontiformes | Anablepidae | Anableps anableps | native | Largescale foureyes | English : Foureye |
| Cyprinodontiformes | Anablepidae | Anableps microlepis | native | Foureyes | English : Foureye |
| Cyprinodontiformes | Rivulidae | Anablepsoides holmiae | endemic | ||
| Cyprinodontiformes | Rivulidae | Anablepsoides lanceolatus | endemic | ||
| Cyprinodontiformes | Rivulidae | Anablepsoides mazaruni | endemic | ||
| Cyprinodontiformes | Rivulidae | Anablepsoides stagnatus | native | ||
| Cyprinodontiformes | Rivulidae | Anablepsoides waimacui | endemic | ||
| Clupeiformes | Engraulidae | Anchoa spinifer | native | Spicule anchovy | English : Herring |
| Clupeiformes | Engraulidae | Anchovia surinamensis | native | Surinam anchovy | |
| Clupeiformes | Engraulidae | Anchoviella guianensis | native | Guyana anchovy | |
| Clupeiformes | Engraulidae | Anchoviella lepidentostole | native | Broadband anchovy | |
| Clupeiformes | Engraulidae | Anchoviella manamensis | native | Manamo anchovy | |
| Siluriformes | Loricariidae | Ancistrus dolichopterus | native | Bushymouth catfish | |
| Siluriformes | Loricariidae | Ancistrus hoplogenys | native | ||
| Siluriformes | Loricariidae | Ancistrus kellerae | native | ||
| Siluriformes | Loricariidae | Ancistrus leucostictus | native | ||
| Siluriformes | Loricariidae | Ancistrus lithurgicus | native | ||
| Siluriformes | Loricariidae | Ancistrus nudiceps | endemic | ||
| Siluriformes | Loricariidae | Ancistrus saudades | native | ||
| Characiformes | Anostomidae | Anostomoides laticeps | native | ||
| Characiformes | Anostomidae | Anostomus anostomus | native | Striped headstander | |
| Characiformes | Anostomidae | Anostomus ternetzi | native | ||
| Characiformes | Parodontidae | Apareiodon agmatos | native | ||
| Characiformes | Parodontidae | Apareiodon gransabana | native | ||
| Characiformes | Characidae | Aphyocharacidium melandetum | native | ||
| Characiformes | Characidae | Aphyocharax erythrurus | native | Flametail tetra | |
| Pleuronectiformes | Achiridae | Apionichthys finis | native | English : Flounder | |
| Cichliformes | Cichlidae | Apistogramma ortmanni | native |