There are currently two recognized species in this genus:[1] B. dinema originates from Laos, Vietnam, Thailand, Malay Peninsula, Sumatra, and Borneo.

This species feeds on smaller fish near the water surface.

Presently, large numbers are being taken near Stung Treng in Cambodia by explosives.

[3] B. truncatus is known from the Mekong and Chao Phraya River basins.

[4] B. truncatus migrates upstream through the Khone Falls in June to July with other silurids and enters the flooded forest in July to October, where it feeds heavily on cyprinids of the genus Henicorhynchus.