| Scientific Name | FishBase Name | Country | Locality | Date taken | Photo |
|---|---|---|---|---|---|
| Acestrorhynchus falcatus | Guyana | Waini River |  |
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| Acestrorhynchus microlepis | Pike characin | Guyana | Essequibo River |  |
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| Anablepsoides waimacui | Guyana | Potaro River |  |
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| Anchovia surinamensis | Surinam anchovy | Guyana | Barama R. |  |
|
| Anchoviella guianensis | Guyana anchovy | Guyana | Waini R. |  |
|
| Boulengerella cuvieri | Guyana | Essequibo R. |  |
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| Boulengerella cuvieri | Guyana | Essequibo R. |  |
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| Brachyplatystoma vaillantii | Laulao catfish | Guyana | Waini River |  |
|
| Cephalosilurus albomarginatus | Guyana | Potaro River |  |
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| Chasmocranus brevior | Guyana | Potaro R |  |
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| Colomesus asellus | Amazon puffer | Guyana | Waini R. |  |
|
| Colomesus psittacus | Banded puffer | Guyana | Morika R. |  |
|
| Crenicichla alta | Millet | Guyana | Essequibo R. |  |
|
| Lugubria lugubris | Guyana | Essequibo R. |  |
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| Lugubria lugubris | Guyana | Potaro R. |  |
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| Curimata cyprinoides | Guyana | Barama R. |  |
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| Curimata vittata | Guyana | Essequibo R. |  |
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| Curimatella immaculata | Guyana | Waini R. |  |
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| Cyphocharax festivus | Guyana | Potaro R. |  |
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| Cyphocharax helleri | Guyana | Barama R. |  |
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| Doras carinatus | Guyana | Essequibo R. |  |
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| Doras micropoeus | Guyana | Essequibo R. |  |
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| Ossancora punctata | Peru | Pacallpa |  |
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| Eigenmannia macrops | Guyana | Essequibo R. |  |
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| Eigenmannia virescens | Glass knifefish | Guyana | Barama R. |  |
|
| Electrophorus electricus | Electric eel | Guyana | Essequibo R. |  |
|
| Eleotris amblyopsis | Large-scaled spinycheek sleeper | Guyana | Waini R. |  |
|
| Geophagus brachybranchus | Guyana | Essequibo R. |  |
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| Geophagus brachybranchus | Guyana | Mazaruni R. |  |
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| Guianacara owroewefi | Guyana | Potaro R. |  |
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| Gymnorhamphichthys rondoni | Mousetail knifefish | Guyana | Essequibo River |  |
|
| Gymnotus anguillaris | Guyana | Tukeit Falls |  |
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| Gymnotus anguillaris | Guyana | Tukeit Falls, |  |
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| Gymnotus carapo | Banded knifefish | Peru |  |
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| Hassar orestis | Guyana | Essequibo R. |  |
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| Chasmocranus longior | Guyana | Potaro R. |  |
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| Leptodoras linnelli | Guyana | Essequibo R. |  |
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| Megalonema platycephalum | Guyana | Mazaruni R |  |
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| Microglanis poecilus | Dwarf marbled catfish | Guyana | Essequibo River |  |
|
| Microphis brachyurus | Short-tailed pipefish | Guyana | Waini R. |  |
|
| Moenkhausia browni | Guyana | Potaro R. |  |
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| Moenkhausia chrysargyrea | Guyana | Essequibo R. |  |
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| Moenkhausia cotinho | Guyana | Potaro R. |  |
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| Moenkhausia lepidura | Guyana | Essequibo R., |  |
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| Moenkhausia megalops | Guyana | Essequibo R. |  |
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| Moenkhausia simulata | Peru | Panguana Camp |  |
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| Myleus pacu | Guyana | Essequibo R. |  |
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| Myoglanis potaroensis | Guyana | Potaro R. |  |
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| Pachypops fourcroi | Guyanan croaker | Guyana | Barama River |  |
|
| Parapristella aubynei | Guyana | Moruka R. |  |
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| Parodon buckleyi | Peru | Panguana |  |
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| Phenacogaster megalostictus | Guyana | Potaro R. |  |
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| Piabucus dentatus | Guyana | Waini R. |  |
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| Pimelodella cristata | Guyana | Essequibo River |  |
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| Pimelodella elongata | Peru | Tumbes River |  |
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| Pimelodella gracilis | Graceful pimelodella | Peru | Llullapichis River |  |
|
| Pimelodella macturki | Guyana | Waini River |  |
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| Pimelodus albofasciatus | Guyana | Essequibo River |  |
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| Pimelodus blochii | Bloch's catfish | Guyana | Waini River |  |
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| Pimelodus ornatus | Guyana | Potaro River |  |
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| Plagioscion squamosissimus | South American silver croaker | Guyana | Barama River |  |
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| Polydactylus virginicus | Barbu | Guyana | Pomeroon R |  |
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| Poptella compressa | Guyana | Waini R. |  |
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| Prochilodus nigricans | Black prochilodus | Peru |  |
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| Prochilodus rubrotaeniatus | Guyana | Essequibo River |  |
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| Psectrogaster essequibensis | Guyana | Essequibo R. |  |
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| Cephalosilurus albomarginatus | Guyana | Potaro River |  |
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| Rhamdia xetequepeque | Peru | Jequetepeque River |  |
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| Rhynchodoras xingui | Guyana | Essequibo R. |  |
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| Laimosemion agilae | Guyana | Waini River |  |
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| Anablepsoides waimacui | Guyana | Potaro R. |  |
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| Apionichthys finis | Guyana | Essequibo R. |  |
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| Steindachnerina guentheri | Guyana | Barama R. |  |
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| Steindachnerina guentheri | Guyana | Waini R. |  |
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| Synbranchus marmoratus | Marbled swamp eel | Peru | Panguana |  |
|
| Trichomycterus punctulatus | Peru | Jequetepeque R. |  |
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| Vandellia beccarii | Guyana | Essequibo R. |  |