Common name: Forktail blenny

General information

The Forktail Blenny, scientifically known as Meiacanthus atrodorsalis, is a small and active fish that is well-known for its unique defense mechanism. This species belongs to the family Blenniidae and is one of the few fish that possess venomous fangs. These fangs are primarily used for self-defense rather than predation. The Forktail Blenny is a popular choice among aquarists due to its vibrant yellow tail and contrasting dark body, as well as its interesting behavior.

Care

Forktail Blennies are relatively easy to care for but do require a stable and mature aquarium. They thrive in tanks with plenty of live rock and hiding places to mimic their natural environment. These fish are generally peaceful but can be territorial towards other blennies. A varied diet of meaty foods, including frozen and live fare such as mysis shrimp and brine shrimp, will keep them healthy and vibrant.

Reproduction

In the wild, Forktail Blennies are oviparous, with males often displaying to attract females and encourage them to lay eggs in their territory. In the aquarium, breeding can occur if a pair is well-established and the environment is stable. The male will guard the eggs until they hatch.

Habitat

Meiacanthus atrodorsalis is found in the Indo-Pacific region, from the Maldives to Samoa, and north to the Ryukyu Islands. They typically inhabit coral-rich areas and lagoons, often seen darting among the crevices of the reef. They can be found at depths ranging from shallow waters to about 25 meters.

While they do not have a specific symbiotic relationship like clownfish with anemones, their role in the reef ecosystem as both predator and prey contributes to the overall health and balance of their habitat.