Most members of the genus Calaxias are small to mediumsized, fast-swimming, mid-water fishes that can be either lacustrine or diadromous (Whitley 1935). However, one species, Calaxias cleaveri Scott 1934, differs so markedly from typical Tasmanian members of the genus that at one stage it was referred to tpe genus Saxilaga by Scott (1936). Meristic and morphometric comparison of the mainland Ta...