"Betta unimaculata"@en . "Betta unimaculata , the Howong betta, is a species of gourami endemic to the island of Borneo where it is only known from the eastern portion of the island. This species grows to a length of 12.6 centimetres (5.0 in) TL, the largest known species of Betta. This species is also found in the aquarium trade."@en . "iucn3.1" . . . . "* Parophiocephalus unimaculatus (Popta, 1905)" . . . "NE" . . .