Betta fish are aggressive territorials
It is not without reason that they are called Siamese fighting fish. The males set up a territory around plants or rocks. They become very possessive of their territory. Betta fish fight to guard their territory from trespassers. They will fight until the opponent gets injured or backs out. It is to avoid betta fish fighting that they are kept in isolation.
B.Splendens or the Bettas were originally discovered in the wilds. They were commonly found in the shallow paddy field ponds of Thailand, Cambodia, and Vietnam. The natives used to call them ‘biting fish’. They usually grow to a length of 5 cm. When they are fed and kept properly, they can live for 2-5 years. With selective breeding, the breeders have successfully developed brilliantly colored and long-finned varieties of bettas.
Betta fish flare their fins and gills as a sign of aggression
Sometimes, it may also be a sign of flirting with other fish. Two male bettas should never be kept together. One will attack the other male found in its territory and on most occasions kill the other or get himself killed. Traditionally, people have used betta fighting for gambling. They let two male fish fight each other and place bets on the winning fish. A large number of people gather to watch the betta fish fight. One fish is almost always killed in such fights.
Housing a male and female betta together is also not advisable
They will often attack each other. They can be kept together only for breeding purposes. Even in such cases, the female should be removed immediately after it has dropped all its eggs. Female bettas can sometimes be kept together in groups of three or more (in odd numbers). In such cases, the tanks should be large and should provide hiding places for the less aggressive female betta fish.
Male bettas do well in community tanks when housed with other specie of fish
Bettas are tropical fish which thrive well in warm temperatures of around 85degrees Fahrenheit. Other specie of fish selected to live with betta should also have similar tropical requirements. Platies, corycats, African dwarf frog, neon/cardinal tetras, and white cloud mountain minnows do well as bettas tank mates. Bettas tank mate should not have long fins as that would agitate the male betta into mistaking it for another male. Betta might harass and nip at other species that are colorful or have long fins. This makes it necessary to exercise care in selecting tank mates.
People shunning violence, hate to watch betta fish fighting. As a result of cross-breeding, the aggressive traits of the bettas have greatly reduced. Bettas with their vibrant colors, colorful fins, and interactive personalities do attract a lot of people. People consider them the most wonderful freshwater fish around and are increasingly finding offices and homes as pets.