Yellowtail Damselfish

Overview

A blue fish with a bright yellow tail, a common hardy reef aquarium species. Native to Indo-Pacific, it is a popular choice among aquarists for its distinctive appearance and behavior.

History & Origin

Yellowtail Damselfish originates from Indo-Pacific. It has been kept and selectively bred in the aquarium hobby for generations, producing many color forms and regional variants developed through captive breeding.

Appearance & Size

Yellowtail Damselfish is a small fish, generally measuring about 6–9 cm when fully grown. Its body shape and species-specific coloration make it easy to recognize among Damselfishes & Clownfish.

Temperament

Yellowtail Damselfish shows a temperament typical of its group—largely peaceful but with individual or territorial quirks; match it with compatible tankmates and adequate cover.

Care & Husbandry

A marine species best suited to experienced saltwater aquarists, it requires a mature, well-established aquarium with stable salinity (around 1.023–1.025 specific gravity), strong filtration and pristine water quality. Feed a varied diet of high-quality prepared foods supplemented with live or frozen items, and quarantine new arrivals before adding them to the display.

Health & Lifespan

With good water quality and a balanced diet, Yellowtail Damselfish typically lives 5–8 years in captivity. Watch for common aquarium ailments such as parasites, fungal infections and stress-related disease, and maintain stable parameters to keep it thriving.

Popularity & Recognition

Damselfishes and clownfish are quintessential reef fish, with clownfish famed for their anemone symbiosis and iconic orange-and-white stripes.