For example:

1. angelfish, also known as swallowfish, angels, small angelfish, small finless sail fish, etc. , belonging to LEPIDOPTERA, is native to Guyana and Brazil in South America. The angelfish is12-15cm long and15-20cm high. Its head is very small, and its top is flat and diamond-shaped. Both dorsal fin and anal fin are very big, as tall and straight as a spinnaker, so they are called small fin sail fish. From the side, the angelfish swims like a swallow, so the angelfish is also called swallow fish.

2. Lucky fish, also known as spaceships and hairline bass, originated in Vietnam, Thailand, Malaysia and so on. It belongs to Perciformes, Anabaena and Ophiopogonidae. The fish in this family are generally small, but lucky is the giant of this family. Adult fish is 20-69 cm long and oval. The body color is grayish brown, and the ventral fin is mutated into two filament fins, each of which is reddish. The feeding water temperature is 22-26 degrees Celsius, and the requirements for water quality are not strict. The culture water temperature is 26-27 degrees Celsius, and the distal end of the dorsal fin of the male fish is long, which belongs to the foam egg-laying fish. Several aquatic plants float on the water surface of the aquarium, and a pair of parent fish are put in. The male fish protrudes a lot of bubbles on the water surface, and the fertilized eggs protrude into the bubbles to hatch. The female fish lays 500- 1000 eggs each time, which is mild and easy to raise.

3. "Trichogaster trichopterus" is actually an artificial variety of Trichogaster trichopterus (Pallas, 1770), belonging to Anabaena of Perciformes.

The pearl vest, the silvery brown body and even the fins are covered with pearl-like spots, which is particularly elegant, which is also the origin of its name.

There are many more, I hope my answer can help you!