Common name: Lawnmower Blenny

General information

The Lawnmower Blenny, scientifically known as Salarias fasciatus, is a popular fish among reef aquarium enthusiasts due to its algae-eating habits. This small, charismatic blenny is known for its voracious appetite for various types of microalgae, which helps to control algae growth in the aquarium. Its mottled brown and tan coloration, along with the distinctive cirri (small, fleshy appendages) above the eyes, gives it a unique appearance that adds interest to any tank.

Care

Lawnmower Blennies are hardy and adaptable, making them suitable for both beginner and advanced aquarists. They thrive in well-established aquariums with plenty of live rock for grazing and hiding. While they primarily consume algae, they may need supplemental feeding with algae-based foods if the natural algae supply is insufficient. It's important to monitor their feeding to ensure they are getting enough to eat, especially in very clean tanks with low algae levels.

Reproduction

In the wild, Lawnmower 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, as it requires replicating their natural reproductive behaviors and providing suitable conditions for the eggs and fry.

Habitat

Lawnmower Blennies are found in shallow, tropical marine environments throughout the Indo-Pacific region. They prefer reef flats and shallow lagoons with abundant algae growth, where they can be seen perching on rocks or coral heads. Their natural habitat includes areas with strong water movement, which helps to deliver a steady supply of microalgae for them to graze on.