The Astyanax epiagos lives in the pelagic, freshwater environment.
Astyanax epiagos is distinguished from the majority of its congeners and from all Astyanax known to occur in northeastern Brazilian drainages by the reduced number of branched anal-fin rays (usually 14-16), along with a series of other distinctive characters (e.g. More
Astyanax epiagos “…was collected exclusively in dark water streams, running over rocky bottom at elevate altitudes (899–934 m), in environment characterized by relatively small rocky pools (0.5 m deep and 1. More