There are tuna, shark, mackerel, salmon, anchovy, etc.

1. Tuna

Mainly distributed in the tropical, subtropical and temperate waters of the Pacific, Atlantic and Indian Oceans. Tuna meat is tender and delicious, with high protein content; it is rich in biologically active polyunsaturated fatty acids such as docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA); at the same time, methionine, It is rich in taurine, minerals and vitamins. It is a green and pollution-free healthy food recommended by the International Nutrition Association

2. Sharks

Marine, a few species enter fresh water, and are a group of A medium to large marine fish that swims fast. The endoskeleton of sharks is entirely composed of cartilage, often calcified, but without any real bone tissue. The exoskeleton is not very developed or degenerated. The body is often covered with skin teeth (scales). The teeth are diverse and have hard muscles, but the membranous bones are never Existence, seamless brain. The upper forehead is composed of the quadratopalatine cartilage, and the lower forehead is composed of Mayer's cartilage.

The latest research shows that sharks contain a variety of biologically active ingredients, such as anti-cancer factors, squalene, mucopolysaccharides, etc. The medicinal use of sharks was first discovered in the "Compendium of Materia Medica". Among the Chinese people, shark cartilage extracts, shark liver oil, etc. have long been used to treat cancer and other diseases.

3. Bay Mackerel

The scientific name of Bay Mackerel is "blue-spotted mackerel". my country's Bohai Sea, Yellow Sea, East China Sea and the offshore waters of North Korea are its main distribution areas. Its body is smooth and delicate, with a spindle shape, generally 0.3 to 0.5 meters long, and up to 1 meter in length. Its back is blue-black, covered with blue spots, and its abdomen is silver-gray. It is used to floating close to the water surface, and its tail fin and The dorsal fin is usually exposed.

The Spanish mackerel sometimes jumps out of the water with its shiny scales, which is very spectacular. The Spanish mackerel has sharp teeth, agile movements, and a ferocious nature. Its streamlined body allows it to swim extremely fast. It often hunts small fish in groups, among which fish is their favorite food.

4. Salmon

Salmon is a ferocious carnivorous fish of the family Salmonidae and the genus Pacific Salmon. The sides of the body are flat, and the dorsal and ventral outlines are relatively symmetrical and spindle-shaped. The length of the head is approximately equal to the height of the body. The mouth is located at the end, with a large cleft. The maxilla extends back to the rear edge of the eye, diagonally downward, like a bird's beak.

The upper jaw, lower jaw and vomer all have teeth. The eyes are larger below the body axis. The dorsal fin is located slightly behind the center of the body. The body color gradually darkens, and 10-12 purple-red vertical stripes appear on the side of the body. When reaching the spawning site, the entire body color becomes dull. The body length can reach 100 cm.

Salmon are cold-water anadromous spawning swimming fish. Young fish live in the ocean for 3-5 years. They usually reach sexual maturity at age 4 and return to rivers to spawn after maturity. Widely distributed in the Bering Sea, North Pacific, Sea of ??Okhotsk, Sea of ??Japan and coastal rivers.

5. Anchovies

Anchovies are also known as anchovies, rainbow fish, million fish, saury fish, anchovies, grilled fish, and bean fish. They have an elongated body and flat sides. , gradually elongating backward. Abdominal ribs are prominent, 16-17 22-26. The snout is short, round and protruding, equal to or slightly larger than the diameter of the eye. The eyes are large. The mouth is large and inferior; the cleft of the mouth is inclined. The back of the maxilla extends to the base of the pectoral fin, and the lower edge of the maxilla has fine serrations.