Beau Gregory Damselfish

Beau Gregory Damselfish ([Stegastes leucostictus]) is a semi-aggressive species that is reef-safe with caution, admired for its vivid blue-and-yellow coloration, hardy nature, small size, and territorial behavior. Males typically become more territorial, especially during breeding, defending a nest site aggressively, while females/juveniles tend to display slightly less intense coloration and are somewhat less aggressive. They reach about 3–4 inches in adult size and should be housed in aquariums of at least 30 gallons.

Provide ample live rock with caves and hiding spots along with some 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 meaty foods (mysis shrimp, brine shrimp, copepods), high-quality marine pellets, and some algae-based foods. With proper care, this fish makes a hardy and vibrant addition to a marine aquarium, though its territorial nature means tank mates should be chosen carefully.

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.