The Halfmoon Betta is a sought-after variety of Betta Fish, recognized for its striking half-moon shaped tail and vibrant colors. Originating by Thai breeders, the goal was to create a Betta Fish with a tail that forms a perfect half-circle when fully flared. Today, halfmoon butterfly betta for sale are available in a range of solid and multi-colored varieties, making them a popular choice for aquarium enthusiasts of all levels.