南乳鱼科是辐鳍鱼纲胡瓜鱼目的其中一科。

南乳鱼科下分10个属：

The Galaxiidae, also known by the anglicised name as galaxiids, are a family of mostly small freshwater fish in the Southern Hemisphere. The majority of species live in Southern Australia or New Zealand, but some are found in South Africa, southern South America, Lord Howe Island, New Caledonia, and the Falkland Islands. One of the galaxiid species, the common galaxias (Galaxias maculatus), is probably the most widely naturally distributed freshwater fish in the Southern Hemisphere. They are coolwater species, found in temperate latitudes, with only one species known from subtropical habitats. Many specialise in living in cold, high-altitude upland rivers, streams, and lakes.