Didymothallus

Didymothallus is a genus of viviparous brotulas found in the Indian and western Pacific Oceans.

Species
There are currently four recognized species in this genus:
 * Didymothallus criniceps Schwarzhans & Møller, 2007
 * Didymothallus mizolepis (Günther, 1867) (Smalleye cusk)
 * Didymothallus nudigena Schwarzhans & Møller, 2011
 * Didymothallus pruvosti Schwarzhans & Møller, 2007