Baturussa

Deissner's liquorice gourami, Parosphromenus deissneri, is endemic to the island of Bangka in Indonesia, mostly in its northern and eastern portions. For almost a century after its description in 1859 it was the only recognised member of the genus, so its name has been widely misapplied in aquarium and ichthyological literature, though it's probably always been very rare in the hobby. Males have pale subdistal bands of oval spots in the unpaired fins.