| Scientific Name | FishBase Name | Country | Locality | Date taken | Photo |
|---|---|---|---|---|---|
| Ancistrus clementinae | Ecuador | Guayas River drainage | |
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| Eretmobrycon festae | Ecuador | Guayas River drainage | |
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| Brycon alburnus | Ecuador | Guayas River | |
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| Brycon alburnus | Ecuador | Santa Rosa | |
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| Brycon atrocaudatus | Ecuador | Santa Rosa | |
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| Brycon dentex | Ecuador | Santa Rosa | |
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| Bryconamericus brevirostris | Ecuador | Guayas River basin | |
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| Bryconamericus peruanus | Ecuador | |
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| Transancistrus aequinoctialis | Ecuador | Guayas River drainage | |
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| Transancistrus santarosensis | Ecuador | Santa Rosa River | |
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| Dormitator latifrons | Pacific fat sleeper | Ecuador | Chongon Reservoir, Guayaquil | |
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| Hemiancistrus landoni | Ecuador | Guayas River drainage | |
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| Hoplias microlepis | Ecuador | Guayas River drainage | |
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| Hyphessobrycon ecuadoriensis | Ecuador | Guayas River basin | |
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| Ichthyoelephas humeralis | Ecuador | Guayas River drainage | |
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| Iotabrycon praecox | Ecuador | Guayas River drainiage | |
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| Iotabrycon praecox | Ecuador | Guayas River drainiage | |
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| Isorineloricaria spinosissima | Zucchini catfish | Ecuador | Guayas River drainage | |
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| Ituglanis laticeps | Ecuador | Guayas River basin | |
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| Landonia latidens | Ecuador | Guayas River basin | |
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| Leporinus ecuadorensis | Ecuador | Guayas River basin | |
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| Microglanis variegatus | Ecuador | Guayas River drainage | |
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| Paracetopsis bleekeri | Ecuador | Guayas River drainage | |
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| Phenacobrycon henni | Ecuador | Guayas River basin | |
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| Piabucina astrigata | Ecuador | |
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| Pimelodella modestus | Ecuador | Guayas River drainage | |
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| Pseudochalceus lineatus | Ecuador | Guayas River drainage | |
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| Pseudocurimata boulengeri | Ecuador | Daule-Peripa Reservoir, Guayas River drainage | |
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| Pseudocurimata lineopunctata | Ecuador | |
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| Pseudocurimata troschelii | Ecuador | Daule-Peripa Reservoir, Guayas River drainage | |
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| Pseudocurimata troschelii | Ecuador | Guayas River drainage | |
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| Rhamdia quelen | South American catfish | Ecuador | Guayas River drainage | |
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| Rhoadsia altipinna | Ecuador | Guayas River drainage | |
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| Rineloricaria jubata | Ecuador | Baba River | |
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| Saccodon terminalis | Ecuador | Guayas River drainage | |
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| Saccodon wagneri | Ecuador | Guayas River drainage | |
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| Sternopygus arenatus | Ecuador | Guayas River basin | |
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| Trichomycterus taenia | Ecuador | Guayas River basin | |