Author: Casciotta, Almirón, Piálek, Gómez & Říčan, 2010
Comments: Recorded both before and after the Urugua-í hydroelectrical dam was built in 1989.  Presently inhabits also directly in the reservoir.  Occurs in a moderately fast flowing river with tributaries of an average depth of 1 m outside of the dam influence and with bottom consisting of mud, sand with gravel and/or bedrock.  <i>Sympatric with Crenicichla yaha</i>(Ref. 85167).