Among the marine fish, some beautiful fish can be raised in the aquarium for people to watch, we call it seawater ornamental fish. These fish are brightly colored and have many forms. Most of them live in coral bushes, so they are also called coral reef fish.

In the ocean, the vertical distribution of marine ornamental fish can extend from the high and low tide line tide pools or intertidal zones to deeper seas. In terms of geographical distribution, it is mainly affected by the temperature of seawater. The warmest water area is 25℃-29℃, and it is not suitable for growth below 20℃. Across the equatorial south and within 30 degrees north latitude, the sun is abundant and the sea is clear。

The seas most suitable for coral reef fish survival in the world are mainly distributed in the Indian Pacific. From the Indian Ocean in the Red Sea to northern Australia, Bolivia, and New Guinea to Queensland in Australia are the most prosperous. The aquarium fishes in the western Indian Ocean and the Caribbean are also abundant. In addition, there are many species of marine aquarium fish along the coast of South China, the South China Sea and the Taiwan Strait, with an estimated more than 1,500 species.