Common name: Two-stripe Blenny

General information

The Two-stripe Blenny, scientifically known as Ecsenius isos, is a small, colorful fish that adds personality and interest to any reef aquarium. This species is part of the Blenniidae family and is known for its distinctive two black stripes running longitudinally along its body, which contrast sharply with its bright yellow or orange coloration.

Blennies from the genus Ecsenius are generally peaceful and hardy, making them suitable for most reef aquariums. They are also known for their curious behavior, often seen perching on rocks or coral heads, observing their surroundings.

Care

Two-stripe Blennies are relatively easy to care for, requiring a tank with plenty of live rock for perching and hiding. They are herbivores, so it's important to provide them with a diet that includes algae and vegetable matter. They can also accept high-quality commercial foods formulated for marine herbivores.

These blennies are known to be jumpers, so an aquarium with a secure lid is recommended to prevent escape. They are generally peaceful but can be territorial towards other blennies or similar-sized fish, especially in smaller tanks.

Reproduction

In the wild, Two-stripe Blennies are oviparous, with males often guarding and caring for the eggs until they hatch. In the aquarium, breeding is possible but not common. If conditions are right and a pair is formed, the male will prepare a nesting site where the female can lay her eggs.

Habitat

Ecsenius isos is found in the Western Pacific, from Indonesia to the Solomon Islands, and typically inhabits shallow coral reefs and lagoons. They prefer areas with abundant live rock and coral where they can graze on algae and seek refuge from predators.