After Froese & Pauly, 2001 [“The Fishbase”]

<==o Betta (bettas, fighting fishes; taistelukalat) [47]
   |-- B. akarensis Regan, 1910 (Akar betta)
   |-- B. albimarginata Kottelat & Ng, 1994
   |-- B. anabatoides Bleeker, 1851 (Giant betta)
   |-- B. balunga Herre, 1940
   |-- B. bellica Sauvage, 1884 (Slim betta)
   |-- B. breviobesus Tan & Kottelat, 1998
   |-- B. brownorum Witte & Schmidt, 1992
   |-- B. burdigala Kottelat & Ng, 1994
   |-- B. channoides Kottelat & Ng, 1994
   |-- B. chini Ng, 1993
   |-- B. chloropharynx Kottelat & Ng, 1994
   |-- B. coccina Vierke, 1979
   |-- B. dimidiata Roberts, 1989
   |-- B. edithae Vierke, 1984
   |-- B. enisae Kottelat, 1995
   |-- B. falx Tan & Kottelat, 1998
   |-- B. foerschi Vierke, 1979
   |-- B. fusca Regan, 1910 (Dusky betta)
   |-- B. hipposideros Ng & Kottelat, 1994
   |-- B. imbellis Ladiges, 1975 (Crescent betta)
   |-- B. livida Ng & Kottelat, 1992
   |-- B. macrostoma Regan, 1910 (Spotfin betta)
   |-- B. miniopinna Tan & Tan, 1994
   |-- B. ocellata de Beaufort, 1933
   |-- B. patoti Weber & de Beaufort, 1922
   |-- B. persephone Schaller, 1986
   |-- B. pi Tan, 1998
   |-- B. picta (Valenciennes, 1846) (Spotted betta)
   |-- B. pinguis Tan & Kottelat, 1998
   |-- B. prima Kottelat, 1994
   |-- B. pugnax (Cantor, 1849) (Penang betta)
   |-- B. pulchra Tan & Tan, 1996
   |-- B. renata Tan, 1998
   |-- B. rubra Perugia, 1893 (Toba betta)
   |-- B. rutilans Witte & Kottelat, 1991
   |-- B. schalleri Kottelat & Ng, 1994
   |-- B. simorum Tan & Ng, 1996
   |-- B. simplex Kottelat, 1994
   |-- B. smaragdina Ladiges, 1972 (Blue betta)
   |-- B. spilotogena Ng & Kottelat, 1994
   |-- B. splendens Regan, 1910  (taistelukala; Siamese fighting fish)
   |-- B. strohi Schaller & Kottelat, 1989
   |-- B. taeniata Regan, 1910 (Borneo betta)
   |-- B. tomi Ng & Kottelat, 1994
   |-- B. tussyae Schaller, 1985
   |-- B. unimaculata (Popta, 1905) (Howong betta)
   `-- B. waseri Krummenacher, 1986

Reference(s):