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
Blue trevally Numerous, inconspicuous golden spots often are present on the sides, mostly above the level of the pectoral fins. The soft dorsal and anal fins are pale yellowish-green, and the anterior lobes of both often have white to blue tips. The caudal fin is yellow green, having a dark trailing edge and tips, while the pelvic fins are whitish to hyaline. The blue trevally has a wide distribution, inhabiting the tropical and subtropical waters of the Indian, West Pacific and Central Pacific Oceans. It ranges from South Africa in the west, north along the East African coast to the Red Sea