REVISION OF THE BETTA-WASERI SPECIES GROUP (TELEOSTEI, BELONTIIDAE)

A revision of the newly defined Betta waseri species group is presente d. The identity of Betta waseri Krummenacher, 1986 (Teleostei: Belonti idae) is clarified on the basis of fresh material from and near the ty pe locality in the state of Pahang, Peninsular Malaysia. Specimens fro m peat swamps in the states of Selangor and Perak are referred to a ne w species, B. hipposideros. A second new species, B. tomi, is describe d from freshwater swamps in Johor; this species apparently also inhabi ted Singapore waters in the past but is now extinct on the island. A t hird new species, B. spilotogena, is also described from freshwater sw amps in Pulau Bintan in the Riau Archipelago, Indonesia.