CATDOLL : CATDOLL: What are the morphological and structural characteristics of crucian carp that are adapted to aquatic life?

1. What are the morphological and structural characteristics of crucian carp that are adapted to aquatic life?

Fish have characteristics that make them suitable for living in water:

1. The dark color on the top and light color on the bottom of the fish's body is the fish's protective color.

2. The body is streamlined, larger in the middle and smaller at both ends.

3. The body surface is covered with scales to protect the body; there is a layer of mucus on the surface of the scales to reduce water resistance when swimming.

4. There is a lateral line on both sides of the body, which is connected to the nerves and mainly functions to determine direction and sense water flow.

5. A fish's body has pectoral fins, dorsal fins, pelvic fins and caudal fins, which are its organs of movement in water.

6. Fish breathe through gills.

7. The swim bladder in the body regulates the body's specific gravity. With the cooperation of the fins, the swim bladder can enable the fish to stay in different water layers.

2. What are the external morphological characteristics of crucian carp that are adapted to life in water?

Take carp as an example:

1. The back is dark gray and the belly is white. This is a protective color.

2. The body is spindle-shaped (pointy head and tail, wide trunk)

3. There is mucus on the surface of the fish

4. There are lateral lines (sensory organs) on both sides of the body

5. Fins (organs of locomotion)

3. What are the characteristics of crucian carp’s adaptation to life in water?

1. There are scales on the body surface; 2. There are gills, so it can breathe in water; 3. It can obtain food and defend against enemies in water; 4. It has fins, so it can move in water.