Betta fish is a common ornamental fish. How to raise them and provide them with a water level has become a common problem that puzzles breeders. The water level for raising betta fish is between 15 and 20 cm. At this water level, they can swim freely and have good ornamental value. If the water level is too high, the pressure in the water will increase.

If it is a growing juvenile fish, it will affect their growth and development, causing them to become deformed fish. If it is an adult fish, the water pressure is too high, which will squeeze their bodies and cause harm to their bodies. If the water level is too low, betta fish will not swim, which will affect their activity. To a certain extent, it will also affect the ornamental value.

Betta fish is a kind of aggressive fish by nature, which is not suitable for raising with other fish, but should be raised alone in most cases. Therefore, the fish tank for raising them does not need to be too big, but it cannot be too small. Generally, a fish tank of about 10 liters is selected. If the fish tank is too big, especially if it is too high, it will make it difficult for them to float. Betta is a kind of upper fish. If the fish tank is too small, especially if the height is too low, it will easily affect their growth. When raising, it is best to choose a square fish tank. They can swim in a square fish tank and enjoy it better. The round fish tank will enlarge the scenery in the fish tank and affect the breeder's observation.