Fin, a first-level Chinese character, ? is pronounced as fin (qí).

Basic etymology:

Fin qí

The locomotor organ of fish, consisting of a membrane and stiff spines, which, according to the part of the body in which it is located, can be divided into the pectoral, ventral, spine, anal, and caudal fins.

Basic Etymology:

fin qí

Noun: (Morph. From fish, jing. Original meaning: the fin- or paddle-like appendages of fish and certain other aquatic animals) Same as original meaning , which serves to propel, balance, and guide. According to their location, they can be divided into dorsal, anal, caudal, pectoral and ventral fins. E.g., fin spines (the spine-like hard bones that support the membrane of a fish's fins. Also called fin iguanas).

1. Appendages of aquatic vertebrates. There are two types of fins: unpaired odd fins, such as the dorsal, anal and caudal fins; and paired even fins, the pectoral and ventral fins.

2. The basic function of the dorsal and anal fins is to maintain the balance of the body, and the anal fin, if long, can also help swimming. The caudal fin mainly plays the role of propulsion and steering. The main function of the even fin is to maintain body balance and change the direction of movement.

3. Dorsal fin; the fin on the back of a fish. Also called spine fin.

4, scaly fins: the scales and fins of the fish.

5, fins; fins are important organs used by most fish to swim and maintain body balance, including paired even fins and unpaired odd fins.

6. Ventral fins: The fins on the abdomen of fish, one on each side, are the organs that change direction and support the balance of the body.