Twocoat Coralblenny

Ecsenius dilemma

The Twocoat Coralblenny, a combtooth blenny species, inhabits coral reefs in the western Pacific, specifically around the Philippines. This small fish reaches a maximum length of 3.1 centimeters and features an elongated body shape. Divers can identify it by its distinct dorsal spines and soft rays, with a total of 12 dorsal spines and 12 to 13 dorsal soft rays. The anal fin is supported by 2 spines and 14 to 15 soft rays, while the vertebrae count ranges from 31 to 32. Twocoat Coralblennies are typically found at depths ranging from 1 to 34 meters, residing in coral reefs, sand, rubble, and coral bottoms. They primarily feed on benthic algae and weeds, making them herbivorous in nature. Reproduction is oviparous, with distinct pairing during mating. Their eggs are demersal and adhere to substrates through a filamentous pad, while the larvae are planktonic and often found in shallow coastal waters. For divers, encountering a Twocoat Coralblenny can be a subtle experience, as these fish are harmless and blend well with their reef environment. They are listed as Least Concern on the IUCN Red List. These fish are also known in the aquarium trade due to their manageable size and peaceful nature.