Tropical fish are fish that live in tropical or subtropical waters, generally for ornamental purposes. These fish are small, lively, strange in shape and beautiful in color. The main moral is that it represents luck and has the symbolic meaning of koi fish.

Tropical fish are born in tropical waters. Tropical fish are divided into freshwater tropical fish and seawater tropical fish. However, in the near tropical zone and the north and south temperate waters bordering it, ornamental fish species are also classified as tropical fish, so their distribution also includes some subtropical areas. This paper introduces the species of tropical ornamental fish living in fresh water.

Tropical fish is actually a fish lover. In order to distinguish it from other ornamental fish, these ornamental fish endemic to tropical and subtropical areas are collectively called tropical fish. They live in fresh water areas such as rivers, streams and lakes. The hometown of tropical fish is mainly in Southeast Asia, Central America, South America and Africa. Among them, the Amazon river system in South America produces the most kinds and the most beautiful forms, such as the queen jujube fairy fish in tropical fish, which was born there. There are many kinds of tropical fish in Malaysia, Indonesia, Sri Lanka, Thailand, Myanmar and other countries. In the south of Guangdong, Yunnan and other provinces in China, there are also beautiful ornamental fish, such as Parthenocissus tricuspidata, white cloud snakehead and blue star fish in Xishuangbanna.

However, in the near tropical area and the north and south temperate waters bordering it, all species with ornamental value are also classified as tropical fish, so their distribution also includes some subtropical areas. This paper introduces the species of tropical ornamental fish living in fresh water. Tropical fish is actually a fish lover. In order to distinguish it from other ornamental fish, these ornamental fish endemic to tropical and subtropical areas are collectively called tropical fish. They live in fresh water areas such as rivers, streams and lakes. The hometown of tropical fish is mainly in Southeast Asia, Central America, South America and Africa. Among them, the Amazon river system in South America produces the most kinds and the most beautiful forms, such as the queen jujube angelfish in tropical fish.