Common name: Outer-reef damsel

General information

The Yellowtail Damselfish, Pomacentrus emarginatus, is a small and vibrant fish that is popular among reef aquarium enthusiasts. This species is known for its striking blue body and bright yellow tail, which adds a splash of color to any marine aquarium. They are relatively hardy and can adapt to a variety of tank conditions, making them suitable for both novice and experienced aquarists.

Care

Yellowtail Damselfish are easy to care for but can be territorial, especially in smaller tanks. They thrive in well-established aquariums with plenty of rockwork and hiding spaces. A varied diet of meaty foods, algae, and high-quality commercial feeds will keep them healthy and maintain their vivid coloration. It's important to monitor tank dynamics as they can become aggressive towards other tank mates, particularly in confined spaces.

Reproduction

In the wild, Yellowtail Damselfish are known to be demersal spawners, laying their eggs on substrates where they are guarded and cared for by the male. In the aquarium, breeding can occur if a stable pair is established, and the tank environment is well-maintained with optimal water quality.

Habitat

Pomacentrus emarginatus is found in the Western Pacific, from the Great Barrier Reef to the Solomon Islands. They prefer shallow, coral-rich areas and lagoons, often seen darting among the branches of stony corals or hiding in crevices.