Betta albimarginata is a species of betta fish, endemic to the island of Borneo where it is only found in the Indonesian province of Kalimantan Timur. It inhabits the shallows (5 to 10 cm (2.0 to 3.9 in)) of forest streams amongst vegetation and debris along the shores. This species grows to a length of 2.8 cm (1.1 in). It is a mouthbrooding species.
- Froese, Rainer and Pauly, Daniel, eds. (2014). “Betta albimarginata” in FishBase. February 2014 version.
- Rüber, Lukas; Britz, Ralf; Tan, Heok Hui; Ng, Peter K. L.; Zardoya, Rafael (April 2004). “Evolution of Mouthbrooding and Life-History Correlates in the Fighting Fish Genus Betta”. Evolution. Society for the Study of Evolution. 53 (4): 799–813. doi:10.1554/03-364. JSTOR 3449277.