Author: Pellegrin, 1903
FBname: Oyapock eartheater
Comments: Typically occurs in rocky zones of main rivers during periods of low water level (Ref. 27188).  Often caught in quiet zones of cascades with sandy-rocky bottom.  Males who appear not to develop s frontal hump have long filaments on their caudal fins, as well as the dorsal and ventral fins (Ref. 35237).  Maximum length 25 cm SL (Ref. 27188).