1. Where

does the oxygen of deep-sea fish come from? The oxygen of deep-sea fish is generally dissolved oxygen in water. The ocean has currents, and in some high latitudes, the temperature of the water will drop, which will lead to an increase in density, so that the surface water will sink into the deep sea, which will increase the oxygen content in the deep sea. In addition, convection and other means can also replenish the oxygen on the seabed, so that the fish living here can breathe.

Clownfish: Clownfish is a common marine ornamental fish. There is more than one kind of fish, but it is commonly known as the fish of the subfamily Anemoninae of the family Pomacentridae. Generally, there are white stripes on the face. The fish should be fed rotifers for the first few days, after which it can be fed shrimp. The artificial diet must contain astaxanthin, which can make its color more bright.

2, gold hang: The scientific name of gold hang is yellow high fin surgeonfish, its body is oval, the color is yellow, Zhu Ayo lives in subtropical waters. This kind of fish's feeding habits are more miscellaneous, not very picky feed, and can eat immediately after entering the fish tank. It is usually raised in coral reef rock tanks, which makes it more ornamental.

3. Sandianbai: Sandianbai is a fish of Pomacentridae, with a length of about 10-15 cm and an oval body. Its whole body is thick black, artificial breeding requires only 150 liters of fish tank, water temperature is maintained at about 26-27 degrees Celsius, usually mainly feeding seaweed, shrimp and fish and insects.