Thyrsites atun (Euphrasén, 1791), the snoek, is a long, thin species of snake mackerel found in the seas of the Southern Hemisphere. This fish can reach a length of 200 centimetres (79 in) SL though most do not exceed 75 centimetres (30 in) SL. The maximum recorded weight for this species is 6 kilograms (13 lb). It is very important to commercial fisheries and is also a popular game fish. It is currently the only known member of its genus. It is also known in Australasia as barracouta though it is not related to the barracuda.