Common name: Three-lined blenny

General information

The Three-lined Blenny, scientifically known as Ecsenius trilineatus, is a small, colorful fish that is a favorite among reef aquarium enthusiasts. This species is part of the Blenniidae family and is known for its distinctive three horizontal lines running along the length of its body, which can vary in color from yellow to brown.

These blennies are not only admired for their appearance but also for their behavior. They are often seen perched on rocks or coral, darting in and out of crevices in search of food or interacting with other tank inhabitants.

Care

Ecsenius trilineatus is a hardy species that adapts well to life in captivity. They require an aquarium with plenty of live rock for grazing and hiding. These blennies are herbivores, and their diet should consist of marine algae, vegetable matter, and high-quality prepared foods that include spirulina or other plant-based ingredients.

It's important to maintain stable water conditions and provide ample swimming space, as these active fish enjoy exploring their environment.

Reproduction

In the wild, Three-lined Blennies are oviparous, with males often guarding and aerating the eggs until they hatch. Breeding them in captivity can be challenging, but with the right conditions and a well-established pair, it is possible to observe their fascinating reproductive behavior.

Habitat

Ecsenius trilineatus is native to the Indo-Pacific region, where it is commonly found in shallow, coral-rich areas and reef flats. They prefer environments with strong water movement and are often observed in depths ranging from just below the surface to about 20 meters.

Their natural distribution includes areas from the Red Sea and East Africa to the central Pacific, making them a species well-suited to a variety of reef aquarium setups.