Butterfly Halfmoon Betta (Betta splendens) is a selectively bred form of the Siamese fighting fish, a species native to Thailand, Cambodia, Laos, and Vietnam. Wild bettas live in shallow, warm, slow-moving freshwater habitats such as marshes, rice paddies, floodplains, canals, and heavily vegetated pools where surface access and plant cover are important.

Butterfly Halfmoon Bettas are bred for a broad 180-degree tail spread combined with a two-tone fin pattern. The “butterfly” look comes from the distinct outer fin band, often white or pale, that frames the tail and fins separately from the inner body and fin color.

This form is best kept as an individual centerpiece fish where its color pattern, wide finnage, and personality can stand out. The white edging on the tail gives the fish a clean outlined look in motion, making the butterfly pattern the main visual trait of this betta.