Coral Sea Gregory

Plectroglyphidodon gascoynei

The Coral Sea Gregory is a small reef fish found in the subtropical waters of the Western Pacific, specifically in the southern Coral Sea and northern Tasman Sea regions, including areas around Australia, Norfolk Islands, New Caledonia, and New Zealand. This species is typically observed in depths ranging from 1 to 30 meters, inhabiting both coral and rocky reefs. The fish has a distinctive appearance with a primarily brown body and head, accented by yellow-orange coloration on the ventral side. A notable blue streak runs from its snout to the suborbital area, accompanied by blue or purplish spots on its opercular series. Each scale features a dark brown streak near its margin, creating a pattern of narrow transverse bands. Divers encountering the Coral Sea Gregory might notice its dorsal fin, which is brown with a somewhat translucent posteriormost part, and a tan to brown caudal fin with translucent to yellowish outer edges. The anal and pelvic fins are yellow to orange, while the pectoral fins are transparent with a yellow suffusion and a small dark spot at the base. The fish reaches a maximum length of 15 cm. It is non-migratory and exhibits distinct pairing during breeding, with males guarding and aerating the demersal eggs that adhere to the substrate. For divers, spotting a Coral Sea Gregory can be a rewarding experience as these fish are harmless and often found dwelling among the reefs. Their conservation status is listed as Least Concern.