Common name: Bicolor blenny

General information

The Bicolor Blenny, scientifically known as Ecsenius bicolor, is a popular and colorful addition to many saltwater aquariums. This species is known for its distinctive two-tone coloration, with the anterior half of the body being a deep blue to purple, and the posterior half a vibrant orange or yellow. The Bicolor Blenny is a small, peaceful fish that typically grows to about 4 inches in length.

Bicolor Blennies are known for their curious and bold behavior, often seen perching on rocks or coral, observing their surroundings. They are a hardy species, making them suitable for both novice and experienced aquarists.

Care

Bicolor Blennies are relatively easy to care for. They require an aquarium with plenty of live rock for grazing on algae and for hiding places. These fish are herbivores, and their diet should consist primarily of marine algae, though they will also accept a variety of prepared foods such as frozen or dried seaweed and algae-based pellets or flakes.

Stable water quality and regular maintenance are essential for the health of these fish. They are not known to be aggressive, but they can be territorial towards other blennies or similarly shaped fish.

Reproduction

In the wild, Bicolor Blennies are oviparous, with males guarding and aerating the eggs until they hatch. Breeding them in captivity can be challenging, and it is not commonly done by hobbyists.

Habitat

The Bicolor Blenny is native to the Indo-Pacific region, where it inhabits shallow reefs and lagoons. They are often found in crevices or among the branches of stony corals. Their natural habitat includes areas with abundant live rock and coral where they can graze on algae and seek shelter.