Black Cap Damselfish

The Black Cap Damselfish (Chrysiptera rollandi) is a semi-aggressive species that is reef-safe with caution, admired for its striking coloration, distinct black cap, compact size, and bold personality. Males typically display an intense, deep black cap contrasted against a bright blue body, becoming even more vibrant during breeding and exhibiting territorial behavior. Females and juveniles are slightly duller, with a softer blue hue and a less pronounced black cap, and generally show calmer behavior. They reach about 3 inches in length and should be housed in aquariums of at least 30 gallons.

A healthy setup for this species should include a sand bed, plenty of live rock, hiding spots, and open swimming space to allow for natural behavior and grazing. Stable water parameters are essential, with salinity around 1.020–1.025, temperature between 72–79°F, and pH ranging from 8.1–8.4. A secure lid is recommended, as damselfish are known jumpers. Their diet should consist of mysis shrimp, brine shrimp, copepods, high-quality pellets, and algae-based foods to ensure proper nutrition. With consistent care and a suitable environment, the Black Cap Damselfish becomes a hardy, colorful, and lively addition to any saltwater 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.