The Betta (scientifically known as Osphronemidae) is a large genus of freshwater ray-finned fish - there are over 73 species in the genus The most popular species of betta is commonly known as the Siamese fighting fish. Bettas are native to Thailand but have been introduce to nearly every continent of the world due to their popularity. Bettas are aggressive and territorial fish. It is considered best practice to not keep two male bettas in the same...