Yellowtail Damselfish

Yellowtail Damselfish (Pomacentrus sp.) is a semi-aggressive species that is reef-safe, admired for its brilliant sapphire-blue body contrasted with a bright yellow tail, small size, and hardy nature. Males typically display brighter coloration and may become territorial when breeding, while females/juveniles show slightly duller colors but are otherwise very similar in appearance.

They reach about 2.5–3 inches and should be housed in aquariums of at least 20 gallons. Provide plenty of live rock for hiding spots and territories, along with open swimming space, stable water parameters (salinity ~1.020-1.025, temp ~72-79°F, pH ~8.1-8.4), and a secure lid since many species are prone to jumping.

Diet should consist of a mix of mysis shrimp, brine shrimp, copepods, high-quality marine pellets, and occasional algae-based foods, and with proper care this fish makes a standout addition to the aquarium.

International Aquatics Quarantine & Guarantee: All fish are checked by marine vets, given a formalin bath, and held for 14 days in copper-treated systems. We feed Selcon-soaked food with Kanaplex and Metroplex during quarantine. Unless marked, all livestock comes with our 15-Day Guarantee. You will receive a video of your fish eating before shipment. On request, we also send photos/videos after arrival at IA. Some species are import-to-order (3-10 business days). Many common species are already cleared or near the end of QT.

Several species will be import-to-order and may take anywhere from 3-10 business days to secure. Once your fish is secured, you will be notified, and the quarantine process will then begin.