Common name: Monocle coralblenny

General information

The One-spot Blenny, scientifically known as Ecsenius monoculus, is a small and charming fish that is well-suited for reef aquariums. This species is known for its distinctive single dark spot on the base of its dorsal fin, which is the origin of its common name. The rest of the body is typically a pale tan or yellow with subtle darker markings that can change depending on the fish's mood and environment.

Care

One-spot Blennies are hardy and adaptable, making them a good choice for both beginner and advanced aquarists. They require an aquarium with plenty of live rock for grazing on microalgae and for hiding. These fish are generally peaceful but can be territorial towards other blennies. They thrive on a varied diet that includes marine algae, vegetable matter, and meaty foods.

Reproduction

In the home aquarium, breeding One-spot Blennies can be a challenge. They are not commonly bred in captivity, and little is known about their specific breeding behaviors. However, like many blennies, they are likely to be substrate spawners, laying their eggs in a secure location where the male can guard them.

Habitat

Ecsenius monoculus is found in the Western Pacific, from Indonesia to the Solomon Islands, and north to the Ryukyu Islands. They inhabit shallow reef flats and lagoon reefs, often seen perching on coral heads or rubble slopes.