The size of the rainbow king Luohan fish is about 20 cm or more, so it is very necessary to choose a suitable and larger fish tank when raising it. They have a strong sense of territory, so they are not suitable for polyculture with other fish, and it is best to raise them alone. Otherwise, they may fight with other fish. Generally speaking, it is not difficult to raise them, and they are more suitable for novice breeding.

1. Fish tank: The size of fish tank space will affect the growth speed and size of rainbow king Luohan fish, so it is important to choose a suitable fish tank. When breeding, it is recommended to choose a fish tank over three feet, which is beneficial to them. In addition, using blue or black as the background color of fish tanks can better highlight the beauty of their body colors.

2. Bottom sand: They have a strong sense of territory and like to swim at the bottom, so it is necessary to lay a layer of fine sand at the bottom of the fish tank. When choosing the bottom sand, it is best to choose the river sand with a size of about 0.5-1 cm and spread it to a thickness of about 5 cm.

3. Water quality: Good water quality environment is one of the necessary conditions to ensure their normal growth. They are suitable for living in weakly acidic to neutral water environment. Therefore, it is recommended to control the PH value of water between 6.5 and 7.2.