Alosa to detect ultrasound (at frequencies above 20 kHz, which is the limit of human hearing). This was first discovered by fisheries biologists studying a type of shad known as blueback herring, and was later verified in laboratory studies of hearing in American shad. This ability is thought to help them avoid dolphins that find prey using echolocation. "Alosa" species are generally pelagic. They are mostly anadromous or semianadromous with the exception of strictly freshwater landlocked species. "Alosa" species are generally migratory and schooling fish. Males usually mature about a year before females; they spawn in the late spring to summer.
Dorab wolf-herring warmer coastal waters, from the Red Sea and East Africa to the Solomon Islands, north to southern Japan, south to northern Australia. Recently reported from Tonga. The dorab wolf-herring is a commercial species which is sold fresh, dried, salted or frozen. It is also a game fish. Dorab wolf-herring The dorab wolf-herring ("Chirocentrus dorab") is a fish species from the "Chirocentrus" genus of the Chirocentridae family. It is a coastal fish, silvery below and bright blue above. It is found in both marine and brackish or estuarine waters, feeding on smaller fish and possibly crustaceans. "Chirocentrus" is from the Greek