Isischthys is a monospecific genus of freshwater ray-finned fish belonging to the family Mormyridae, the elephantfishes. The only species in the genus is Isichthys henryi. It occurs in coastal river basins in West Africa, ranging as far southeast as the Kouilou-Niari River in Middle Africa. It reaches a length of about 29 cm (11 in).

Etymology

The fish is named in honor of Joseph Henry (1797–1878), first Secretary of the Smithsonian Institution in Washington, D.C.