The Siamese fighting fish, also known as the betta, is a popular fish in the aquarium trade.
Bettas are a member of the gourami family and are known to be highly territorial.
Males in particular are prone to high levels of aggression and will attack each other if housed in the same tank.
A Betta's diet should be protein-rich and meaty.
Pellets, frozen or live bloodworms, daphnia, and brine shrimp are best.
Here is a great video from Life With Pets detailing exactly what types of foods and how to feed your betta fish.
Bettas are anabantoids, which means they can breathe atmospheric air using a unique organ called the labyrinth.
This accounts for their ability to thrive in low-oxygen water conditions that would kill most other fish,
such as rice paddies, slow-moving streams, drainage ditches, and large puddles.