The body of the fish usually takes on a streamlined shape, like an arrow, and is able to swim quickly. The surface of their body is covered with scales, which protect their body from harm. Fish usually have large heads with gills of various shapes that help them breathe oxygen from the water. Fish usually have more flexible tails and are able to control direction and balance.
Different species of fish have different morphologies and characteristics. For example, goldfish have a round body and look very cute;Sharks have sharp teeth and a keen sense of smell and can sense the faint currents of waterDolphins, on the other hand, have streamlined bodies and flexible tails that allow them to swim quickly in the water.
In addition to swimming in the water, fish have many other ecological behaviors and Xi habits. For example, some fish will leap out of the water to show their vitality and strength;Some fish nest and thrive in the water;There are also fish that make specific sounds to convey a message or attract mates.
In conclusion, fish have a variety of forms, and different forms reflect their different ways and Xi of living in the water. Understanding the morphology and characteristics of fish helps us better understand their Xi and ecological behavior.