Thryssa mystax is silver, darker dorsally. There is a distinctive dark blotch behind upper part of gill opening, which can easily identify the species from other "Thryssa" species. Caudal fin is yellowish. It feeds on planktons, fish larva, and small crustaceans like shrimp larva. Thryssa mystax The moustached thryssa ("Thryssa mystax"), also known as Gangetic anchovy, is a species of oceanodromous ray-finned fish in the family Engraulidae. It is found in the tropical western Indo-Pacific region from India, Sri Lanka to Myanmar and south to Java, and Indonesia. It is a small schooling fish found in depth of 0-50m. Maximum length do
Bludger (fish) and caudal fins are olive green, with the soft dorsal, anal and anal fins having white lobe tips and the anal having white leading and distal edge. The pelvic and pectoral fins are hyaline to green. The bludger is distributed throughout the tropical to subtropical regions of the Indian and west Pacific Oceans, ranging from South Africa in the west, along east Africa and north to the Red Sea. Its distribution in the Indian Ocean extends east to India, South East Asia, Indonesia and as far south as northern Australia. In the Pacific Ocean, it extends as far north as