12900 Neoaploactis tridorsalis Eschmeyer & Allen, 1978 Aploactinidae Velvetfishes Perciformes/Scorpaenoidei Teleostei Threefin velvetfish Western Pacific: Australia (known only from Rottnest Island and Shark Bay in Western Australia and One Tree Islands, in the Capricorn Group of the southern Great Barrier Reef). Recently reported from the Chesterfield Islands (Ref. 13236).