Siamese fighting fish, Betta splendens "CT Multicolour M - Betta-Online" by Daniella Vereeken via Flickr, Creative Commons Attribution.

Taxonomy:

Betta akarensis (Add)
Betta albimarginata (Add)
Betta anabatoides (Add)
Betta antoni (Add)
Betta apollon (Add)
Betta aurigans (Add)
Betta balunga (Add)
Betta bellica (Add)
Betta breviobesus (Add)
Betta brownorum (Add)
Betta burdigala (Add)
Betta channoides (Add)
Betta chini (Add)
Betta chloropharynx (Add)
Betta coccina (Add)
Betta compuncta (Add)
Betta dimidiata (Add)
Betta edithae (Add)
Betta enisae (Add)
Betta falx (Add)
Betta ferox (Add)
Betta foerschi (Add)
Betta fusca (Add)
Betta gladiator (Add)
Betta hipposideros (Add)
Betta ibanorum (Add)
Betta ideii (Add)
Betta imbellis (Add)
Betta krataios (Add)
Betta kuehnei (Add)
Betta lehi (Add)
Betta livida (Add)
Betta macrostoma (Add)
Betta mandor (Add)
Betta midas (Add)
Betta miniopinna (Add)
Betta obscura (Add)
Betta ocellata (Add)
Betta pallifina (Add)
Betta pardalotos (Add)
Betta patoti (Add)
Betta persephone (Add)
Betta pi (Add)
Spotted betta, Betta picta (Add)
Betta pinguis (Add)
Betta prima (Add)
Penang betta, Betta pugnax (Add)
Betta pulchra (Add)
Betta renata (Add)
Betta rubra (Add)
Betta rutilans (Add)
Betta schalleri (Add)
Betta simorum (Add)
Betta simplex (Add)
Betta smaragdina (Add)
Betta spilotogena (Add)
Siamese fighting fish, Betta splendens

Betta stigmosa (Add)
Betta stiktos (Add)
Betta strohi (Add)
Betta taeniata (Add)
Betta tomi (Add)
Betta trifasciata (Add)
Betta tussyae (Add)
Betta uberis (Add)
Betta unimaculata (Add)
Betta waseri (Add)

Macropodus erythropterus (Add)
Macropodus hongkongensis (Add)
Macropodus ocellatus (Add)
Paradise fish, Macropodus opercularis (Add)
Macropodus spechti (Add)

Malpulutta kretseri (Add)

Trichopsis pumila (Add)
Trichopsis schalleri (Add)
Trichopsis vittata (Add)