The dusky jawfish (Opistognathus whitehursti) is a species of jawfish native to the western Atlantic Ocean including the Gulf of Mexico and the Caribbean Sea where it is an inhabitant of reefs at depths of from 1mto12mm (03feetto39feetm). It can reach a length of 14cm (06inches) TL. This species can also be found in the aquarium trade.
The specific name honours Dr. D. D. Whitehurst, a collector of specimens for the Smithsonian Institution, one of which was the type specimen of this species.[1]