Common name: dusky blenny

General information

The Brown Algae Blenny, also known as the Highfin Blenny or Dusky Blenny, is a small, charismatic fish that is popular among reef aquarium enthusiasts. Its scientific name is Atrosalarias fuscus. This species is known for its unique behavior and the role it plays in controlling algae within the aquarium.

The Brown Algae Blenny has a slender body with a high dorsal fin and a mottled brown coloration that allows it to blend into its surroundings. It is a peaceful fish that can reach up to 4 inches in length and is often seen perching on rocks or coral branches.

Care

Atrosalarias fuscus is a hardy species that adapts well to life in captivity. It requires an aquarium with plenty of live rock for grazing on microalgae and for hiding. This blenny is an excellent choice for controlling algae growth in the tank. It is important to ensure that the aquarium is well-established with a sufficient algal growth before introducing this fish, as it relies heavily on algae for nutrition.

While the Brown Algae Blenny primarily feeds on algae, it may also accept a variety of prepared foods such as marine flakes, pellets, and frozen foods to supplement its diet.

Reproduction

In the wild, Brown Algae Blennies are oviparous, with males often establishing territories and courting females by performing a series of displays and dances. After spawning, the male guards the eggs until they hatch. Breeding them in captivity can be challenging, and success is more likely in a species-specific tank setup that mimics their natural environment.

Habitat

The natural habitat of Atrosalarias fuscus includes shallow reefs and lagoons in the Indo-Pacific region. They are commonly found at depths ranging from just below the surface to about 15 meters. These blennies prefer areas with strong water movement and abundant algal growth.