Citharichthys cornutus, the horned whiff, is a species of flatfish in the large-tooth flounder family Paralichthyidae.

This bathydemersal marine fish inhabits the continental shelves of the western Atlantic Ocean, in both tropical and subtropical waters.

It ranges from New Jersey in the north to Uruguay in the south, though larvae samples have also been collected off the coast of Canada.

[3] Due to its diminutive size and the abundance of larger flatfishes, it is of no commercial importance, and is rarely collected.

As a result, the fishes' morphology and ecology is known only from a limited number of collected samples.