About This Fish

Black Jewfish


Black jewfish (Protonibea diacanthus) is also known as black jew, black mulloway, blotched jew, mulloway, northern mulloway, spotted croaker, spotted jew, spotted jewfish etc. It belongs to Family Sciaenidae under Order Perciformes of Class Actinopterygii. The black jewfish is a migratory species found in coastal waters throughout the Indo-West pacific including India, Sri Lanka, Thailand, Indonesia, Philippines, China, Japan and Australia.



The black jewfish has a large long body with black to bronze color on top, silvery sides and yellow underbelly but the young have many black spots on the upper half of the body as well as the caudal fin. Anterior dorsal and ventral profile is more or less straight with highly convex posterior part. It has a pointed snout which is not protruded. The black jewfish has large terminal mouth forming a low angle to the horizontal and the upper jaw is longer than lower jaw. Lateral line is complete and it bears 49-50 scales. Pectoral, pelvic and anal fins are yellowish in color with dark edges. Pectoral fin is rounded while caudal fin is rhomboid in shape. First dorsal fin has 10-11 spines and soft dorsal with 22-25 rays while anal fin bears 2 spines with 7 soft rays. The black jewfish attains sexual maturity at the age of two years when it reaches 89cm in length. This species can grow up to 45 kg in weight and 1.5 meters in length but average weight is between 8 to 12 kg. The black jewfish can live up to 12 years. It is an opportunistic carnivore which feeds on a wide variety of animals including squid, fish, octopus and crustaceans. The black jewfish spawns during the period from August to December.


= Excellent   = Good   = Fair


The is no calendar data available for the: Black Jewfish