Author: Greenwood, 1960
Comments: Inhabits exposed, shallow and sandy beaches (Ref. 4983).  The stomach contents of the specimens which were examined indicate that <i>H. theliodon</i> is a bottom feeder.  Its diet includes small fishes (cichlids), gastropods, lamellibranchs and insect larvae.  Large quantities of bottom debris were also ingested (Ref. 558).