Swallow fish is a small marine fish with beautiful appearance, which is mainly distributed in Indonesia. Its body is silvery white, with four black longitudinal stripes, a forked tail and bright spots.

Black herring, alias mackerel, Qing Wu, herring, snail green, herring, herring, green stick, bronze green, is a mild carnivorous fish belonging to the CYPRINIDAE Herring and the only species of Herring.