The Bloch's gizzard shad, (Nematalosa nasus), also known as Bloch's gizzard shad, Gizzard shad, Hairback, Long-finned gizzard shad, Long-ray bony bream and Thread-finned gizzard shad, are a widespread and common, small to medium-sized anadromous fish found in all marine, freshwater and brackish waters throughout Indo-West Pacific, towards eastward of Andaman Sea, South China Sea and the Philippines to Korean peninsula. Single specimen recorded from waters of South Africa. It was described by Marcus Elieser Bloch in 1795.