The Betta raja lives in the benthopelagic, freshwater environment.
Betta raja can be housed in pairs, species tanks, and community tanks. Pairs can be housed in a 10 gallon tank, groups should be housed in a 30 gallon tank or larger. Pairs should be given cover such as caves and plants. More
Still, the exotic nature of betta raja does not necessarily mean that it, or any other out-of-the-ordinary betta species necessarily went into the genetic mix of the king betta. It may simply be a large or giant breed of betta splendens, carefully selected from crowntail, plakat, and/or giant breeding stock. More
my pair of betta Raja had just mated. Would like to enquire how long does the pair hold their eggs in the mouth? Thanks. More
Betta raja is included in the Betta pugnax complex of closely-related species, an assemblage which also currently includes B. breviobesus, B. cracens , B. enisae , B. fusca, B. lehi , B. prima , B. pulchra, B. schalleri, B. stigmosa and of course B. More