Le genre Betta compte 74 espèces décrites, réparties en 13 groupes phylogénétique, ou complexes, différents.
Complexe Betta akarensis :
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Betta akarensis (Regan, 1910)
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Betta antoni (Tan & Ng, 2006)
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Betta aurigans (Tan & Lim, 2004)
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Betta balunga (Herre, 1940)
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Betta chini (Ng, 1993)
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Betta ibanorum (Tan & Ng, 2004)
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Betta obscura (Tan & Ng, 2005)
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Betta pinguis (Tan & Kottelat, 1998)
Complexe Betta albimarginata :
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Betta albimarginata (Kottelat & Ng, 1994)
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Betta channoides (Kottelat & Ng, 1994)
Complexe Betta anabatoides :
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Betta anabatoides (Bleeker, 1851)
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Betta midas (Tan, 2009)
Complexe Betta bellica :
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Betta bellica (Sauvage, 1884)
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Betta simorum (Tan & Ng, 1996)
Complexe Betta coccina :
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Betta brownorum (Witte & Schimdt, 1992)
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Betta burdigala (Kottelat & Ng, 1994)
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Betta coccina (Vierke, 1979)
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Betta hendra (Schindler & Linke, 2013)
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Betta livida (Ng & Kottelat, 1992)
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Betta miniopinna (Tan & Tan, 1994)
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Betta persephone (Schaller, 1986)
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Betta rutilans (Witte & Kottelat, 1991)
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Betta tussyae (Schaller, 1985)
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Betta uberis (Tan & Ng, 2006)
- Betta wojak
Complexe Betta dimidiata :
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Betta dimidiata (Roberts, 1989)
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Betta krataios (Tan & Ng, 2006)
Complexe Betta edithae :
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Betta edithae (Vierke, 1984)
Complexe Betta foerschi :
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Betta foerschi (Vierke, 1979)
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Betta mandor (Tan & Ng, 2006)
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Betta rubra (Perugia, 1893)
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Betta strohi (Schaller & Kottelat, 1989)
Complexe Betta picta :
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Betta falx (Tan & Kottelat, 1998)
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Betta picta (Valenciennes, 1846)
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Betta simplex (Kottelat, 1994)
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Betta taeniata (Regan, 1910)
Complexe Betta pugnax :
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Betta apollon (Schindler & Schmidt, 2006)
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Betta breviobesus (Tan & Kottelat, 1998)
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Betta cracens (Tan & Ng, 2005)
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Betta enisae (Kottelat, 1995)
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Betta ferox (Schindler & Schmidt, 2006)
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Betta fusca (Regan, 1910)
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Betta kuehnei (Schindler & Schmidt, 2009)
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Betta lehi (Tan & Ng, 2005)
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Betta pallida (Schindler & Schmidt 2004)
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Betta prima (Kottelat, 1994)
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Betta pugnax (Cantor, 1849)
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Betta pulchra (Tan & Tan, 1996)
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Betta raja (Tan & Ng, 2005)
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Betta schalleri (Kottelat & Ng, 1994)
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Betta stigmosa (Tan & Ng, 2005)
Complexe Betta splendens :
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Betta imbellis (Ladiges, 1975)
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Betta mahachaiensis (Kowasupat, Panijpan, Ruenwongsa & Sriwattanarothai, 2012)
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Betta siamorientalis (Kowasupat, Panijpan, Ruenwongsa & Jeenthong, 2012)
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Betta smaragdina (Ladiges, 1972)
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Betta splendens (Regan, 1910)
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Betta stiktos (Tan & Ng, 2005)
Complexe Betta unimaculata :
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Betta compuncta (Tan & Ng, 2006)
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Betta gladiator (Tan & Ng, 2005)
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Betta ideii (Tan & Ng, 2006)
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Betta macrostoma (Regan, 1910)
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Betta ocellata (de Beaufort, 1933)
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Betta pallifina (Schindler & Schmidt, 2004)
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Betta patoti (Weber & de Beaufort, 1922)
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Betta unimaculata (Popta, 1905)
Complexe Betta waseri :
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Betta chloropharynx (Kottelat & Ng, 1994)
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Betta hipposideros (Ng & Kottelat, 1994)
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Betta omega (Tan Heok Hui & Amirrudin Bin Ahmad, 2018)
- Betta pardalotos (Tan, 2009)
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Betta pi (Tan, 1998)
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Betta renata (Tan, 1998)
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Betta spilotogena (Ng & Kottelat, 1994)
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Betta tomi (Ng & Kottelat, 1994)
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Betta waseri (Krummenacher, 1986)
Complexe Betta waseri - Tache distinctive de la machoire inférieure.
Espèces non décrites :
- Betta sp. Bangka
- Betta sp. Bung Bihn
- Betta sp. Kapuas
- Betta sp. Pangkalanbun
- Betta sp. Sanggau
- Betta sp. Sukadana
Source : International Betta Congress - 2019