Mudskipper: belongs to the loach family. The body is small and slender, only three or four inches. And the body is round, short, with small scales under the skin, black and blue in color, and the whole body is covered with its own mucus, so it is slippery and cannot be held.
Bandfish: bandfish, also known as swordfish, skirt fish, fat band, oil band, tooth bandfish, etc., ferocious traits. Qingdao, Rizhao of the Yellow Sea coastal cities, known as _ fish.
Sharks: as early as 300 million years before the emergence of dinosaurs, they have existed on earth. It has been more than 500 million years, and they have hardly changed in the past 100 million years. Sharks, known in ancient times as mackerel, mackerel, and sandfish, are giants of the ocean, hence the name wolf of the sea.
The stingray: also known as the devilfish, is a type of shark that appeared during the Jurassic period of the Mesozoic Era (about 180 million to 140 million years ago). They have the habit of hiding in the sand on the seabed. The body is flattened, slightly rounded or diamond-shaped, cartilaginous and scaleless, with well-developed pectoral fins resembling butterflies, and a whip-like tail with poisonous spines.
Catfish: same as catfish. There are many species, common catfish (earth catfish), big mouth catfish, catfish (catfish), catfish (Egyptian catfish), Hakka commonly known as pond chub.
Expanded Information
Fish Scale: refers to the shell of the fish, which serves to protect itself and prevent water loss, and is usually fan-shaped. Fish scales are rich in protein, fat and a variety of vitamins, as well as iron, zinc, calcium and a variety of essential trace elements and colloids.
Fish scales also contain a variety of unsaturated fatty acids, which can reduce the buildup of cholesterol on the walls of blood vessels, and have the effect of preventing atherosclerosis, hypertension and heart disease. In some areas, fish scales can also be used as decoration.
1. The scales on the belly of the fish can reflect and refract light, like a mirror, dazzling the fierce aquatic animals underneath. It is not easy for natural enemies on the water to distinguish them.
2. It provides a protective barrier for the fish, isolating it from the myriad of microorganisms around it, effectively avoiding infection and fighting disease.
3. The scales act as an exoskeleton to keep the fish body in a certain shape. In addition, biologists can determine the age of a fish based on the annual rings that grow on its scales (each ring represents a winter). They can also get a more accurate picture of their growth, mortality and health.
4. Fish scales reduce friction between the fish's body and the water column, reducing drag. In addition, natural predators (e.g. humans) can catch the skaters and escape.