Tucanoichthys tucano
Géry & Römer, 1997
Max length
17mm SL0.7in SL
Known only from the rio Uaupés system in Brazil with type locality 'brook emptying into Igarape Yavuari River, tributary of River Uaupés, upper Negro River basin, 0°14'31"N, 68°03'48"W, Amazonas, Brazil'. The full extent of its range is unclear but additional populations may exist.