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
Oplopomus oplopomus stripe, while the second dorsal fin is studded with small dark spots. The pectoral fin is also covered with small spots. The base of the anal fin and the rear portion of the ventral fins are black. The caudal fin has a stripe running through the center. Males have more intense blue markings than females. Juveniles have more black spots and less yellow and blue spots than the adults. Spinecheek gobies belong to the genus "Oplopomus" of the goby family, Gobiidae. The species was first described by the French zoologist Achille Valenciennes in 1837 as "Gobius oplopomus". Spinecheek gobies are