Author: Boulenger, 1906
Comments: Considered a poor aquarium fish.  Is a scavenger-predator with a voracious appetite.  This perennial roamer remains still only when it is getting ready to attack a prey.  It moves about in small packs, never quietly but at a frantic pace, following the leader in its moves, stopping and digging in the sand when it does so or grazing on the biocover (Ref. 6770).  Extreme size dimorphism present among males, with both sizes displaying different behavior and reproductive performance (Ref. 85351).