The blue cheek Borneo Betta or scientifically named Betta Taeniata (Regan 1910) is a medium sized wild betta from our hill streams here in Sarawak. There are also some specimens collected from Kalimantan but they have slight difference of color on the body. As in the case of many other wild bettas, spawning season brings out their best colors. The male displays very strong blueish green opercle with blackish border on their anal and caudal fins. When stressed, it is very hard to distinguish the male from the females as their colors fade out. Betta Taeniata is part of the Betta Picta group. Make sure their water is clean and the tank have plenty of plants to keep them happy.