i have a Bette fish,  Betta is a popular fish in the aquarium trade, and it is so beautiful. 
And how does it looks like?  I know that Betta is a large genus of small, often colorful, freshwater fishes.
they are usually red. Males are more beautiful then females. And you can have only one male in aquarium. 
they must be very territorial.It is great for them that the are anabandtoids, that is that they can breath atmospheric air too.
That is interesting! The fish can be found in standing waters of canals, rice paddies and floodplains.
And they can thrive in low-oxygen water that would kill most other fish, such as rice paddles, drainage ditches and large puddles.
Male spread their fins and twist their bodies in a dance if interested in a female. If the female is interested she will darken in color as a response.
5.5 in) in the Akar betta ("B. akarensis").
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.
The bettas exhibit two kinds of spawning behaviour: some build bubble nests, such as "B. splendens", while others are mouthbrooders, such
Betta
Betta, is a large genus of small, often colorful, freshwater ray-finned fishes, known as "bettas", in the gourami family (Osphronemidae).
The best known "Betta" species is "B. splendens," commonly known as the Siamese fighting fish.
Characteristics.
All the "Betta" species are small fishes, but they vary considerably in size, ranging from under 2.5 cm (1 in) total length in "B. chanoides" to 14 cm (