Preparation materials: paper and pen.

1. Draw a chubby oval as the fish's body.

2. Draw two semicircles on both sides of the fish's body as its tail.

3. Draw a small wave above the fish, and draw two upward C's under the fish as the wings of the fish.

Draw a circle like "melon seeds" in the middle of the fish's body and then draw two points as the swing of the fish.

Draw a small circle in front of the fish's body as the fish's eyes.

6. Draw a few short lines on the fish as a fish pattern. Finally, color, complete.

Fish species:

1, freshwater fish:

Freshwater fish refers to fish that live in freshwater environment, such as carp, crucian carp, grass carp and silver carp. These fish usually live in rivers, lakes, ponds and other waters and feed on algae, aquatic plants and insects. Freshwater fish is one of people's favorite foods because of its delicious meat and rich nutrition.

2. Marine fish:

Marine fish refers to fish that live in the ocean, such as tricolor angelfish, peacock fish, shark and so on. These fish usually live in deep ocean or shallow sea, and feed on plankton and fish. Marine fish is delicious, rich in protein and various trace elements, which is beneficial to human health.

3. Tropical fish:

Tropical fish refers to fish living in tropical areas, such as arowana, parrot fish and arhat fish. These fish usually live in tropical rainforests, coral reefs and other waters and feed on algae and insects. Tropical fish is a popular species in the ornamental fish market because of its bright colors and different shapes.

4. Ornamental fish:

Ornamental fish are those fish with bright colors and different shapes that people keep. They not only have high ornamental value, but also bring endless fun to people's lives.

These fish are usually kept in fish tanks or ponds and feed on algae and feed. There are many kinds of ornamental fish, each with its own unique shape and color, such as goldfish, koi fish and betta. They are deeply loved by people and become one of the common pets in people's lives.