bottom-dweller

English Thesaurus

1. a fish that lives and feeds on the bottom of a body of water (noun.animal)

hypernym	:	fish,
definition	:	any of various mostly cold-blooded aquatic vertebrates usually having scales and breathing through gills (noun.animal)

hyponym	:	mullet,
definition	:	bottom dwelling marine warm water fishes with two barbels on the chin (noun.animal)