At present, there are about 32,000 species of fish discovered in the world, and marine fish account for about two-thirds of them, with at least 21,000 species. Among them, some are relatively large, such as great white sharks, megalodons, whale sharks and other sharks. There are also some medium-sized fish, such as tuna, swordfish, swordfish, salmon, etc. There are also some that are smaller in size, such as small bee fish, clown fish, blue devil ray, archer fish, lion fish, etc.

1. Little Bee The scientific name of Little Bee is Dowry's Short Goby. This is a small tropical fish with a yellow and black body that looks very similar to a bee, hence its name. Its length is between 3-5 cm, and it can survive in an environment with a water temperature of 18-30°C. It is a brackish water fish, so it needs to add an appropriate amount of sea salt when raising it. It has a gentle temperament and can be kept with tropical fish of similar size.

2. Clownfish Clownfish refers to the collective name of fish in the subfamily Anemoneidae of the family Damselfishidae. These fish have one or two white stripes on their faces and look very much like those in Peking Opera. clown. It is a tropical saltwater fish and therefore cannot be kept in freshwater. When raising it, it is generally necessary to feed it with pellets or crushed shrimp meat. The latter can make its color more vivid, and it must also be provided with sufficient light.

3. Blue devil Blue devil is also a fish of the damselfish family, mainly distributed in the South China Sea of ??my country. Its body is about 5-6 centimeters long, oval in shape, blue in color, and has a short black band between its eyes. To raise it, the water temperature needs to be controlled between 24-27°C. Animal feed or algae can be fed at ordinary times. The water must be changed every half month, and the water change must exceed one-third of the total water volume.

4. Archerfish Archerfish is a small ornamental fish, with a body length of about 20 cm and an egg-shaped body. It prefers to eat animal food. In the natural environment, it can catch insects through the water jets shot from its mouth. If you want to raise them, you need to keep the temperature at about 25-30°C and feed artificial bait regularly. If you feed insects, they must be sterilized.