Abstract
The taxonomy of fishes of the family Retropinnidae (Australia, Tasmania and New Zealand) is examined. It is concluded that diadromous and lacustrine populations of Retropinna in New Zealand are Retropinna retropinna (Richardson), and that R. setnoni is the only species, in mainland Australia (R. victoriae Stokell is a junior synonym), with a further species R. tasmanica McCulloch, in Tasmania. The related genus Stokellia Whitley is restricted to New Zealand with the single species S. anisodon (Stokell). The species are described and keys provided, knowledge of their natural history is reviewed, and distribution discussed.