Ecsenius tricolor, known commonly as the Derawan combtooth-blenny in Indonesia, is a species of combtooth blenny in the genus Ecsenius.

It is found in the western central Pacific ocean, around the Philippines and Borneo.

It can reach a maximum length of 6 centimetres.

Blennies in this species feed primarily off of plants, including benthic algae and weeds.

This Blenniidae article is a stub.