It is a type of oceanic important commodity food fish distributed in tropical and subtropical waters around the world, belonging to the order Perciformes, family Scombridae, and class Actinopterygii. Known for its streamlined body, fast swimming ability, and rich nutritional value. It is a carnivorous fish that feeds on small fish, crustaceans, and other marine organisms. It has extremely high commercial value and is a high priced commodity in the global seafood market, commonly used for making sushi, sashimi, and other seafood dishes. The meat is delicious and rich in protein, healthy fats such as omega-3 fatty acids, as well as various vitamins and minerals. Due to overfishing, it has been listed as an endangered species by the International Union for Conservation of Nature.

It is a marine fish species that lives in tropical and subtropical waters, belonging to the family Syngnathidae and genus Syngnathidae. Known for its vibrant body color and unique lifestyle habits. Flat in shape, usually between 20 and 30 centimeters in length, with a blue gray or dark gray body scattered with black spots and stripes. Mainly inhabiting coral reef areas, feeding on algae and small invertebrates. It is a social fish that often swims in groups around coral reefs in search of food. High water quality is required, requiring clear seawater and sufficient sunlight to maintain its healthy growth. It is also a popular ornamental fish.

It is a large river sea migratory fish that can weigh up to 300 kilograms, age up to 60 years old, and typically measure between 4.3 and 5.3 meters in length. The kiss is long and wide, accounting for about 8% of its total length. The body is covered with 5 rows of bone plates, and the back color ranges from black to brownish gray, while the abdomen is white to gray. Young sturgeons usually inhabit freshwater bodies and gradually migrate towards the ocean as they grow. Food includes aquatic animals and plants, while adult sturgeons are omnivorous and feed on benthic organisms and small fish. The spawning behavior of Atlantic sturgeons is mainly influenced by water temperature, and they choose to lay eggs in flowing water bodies with hard objects such as rocks and pebbles.

It is a large marine fish that lives in tropical and subtropical waters, known for its astonishing speed and jumping ability. Having slender bodies and pointed snouts, they are able to quickly navigate through water like arrows. Their bodies are usually dark blue or black with white spots on top, which helps them camouflage in the ocean. It is a top predator that mainly feeds on small fish and squid. When hunting, they will use high-speed sprinting to capture prey, and sometimes even jump out of the water to hit the target with astonishing strength and speed. This hunting method demonstrates the physiological adaptability of swordfish.

The scientific name Pterophyllum is a freshwater fish species that lives in the Amazon River basin in South America. Known for its elegant body shape and graceful dorsal fin, which resembles the wings of an angel, hence its name. It has a variety of body colors, including silver, gold, black, etc., usually with unique spots or stripes, making it very popular in aquariums. Mild personality, suitable for co feeding with other non aggressive fish. They have high requirements for water quality and require a clear and oxygen rich water environment. In addition, angel fish are also highly reproductive fish, and mature female fish can lay eggs multiple times a year.

The scientific name Oncorhynchustshawytscha is a species of Pacific salmon in the Salmonidae family, mainly distributed in the North Pacific and its coastal rivers. This fish is known for its large size and delicious meat, and is one of the important economic fish species. The body length can reach 150 centimeters and the weight can reach 45 kilograms. Having a streamlined body and strong muscles, capable of long-distance migration. Every autumn, adult salmon return from the ocean to the rivers where they were born for breeding. After laying eggs in freshwater, they will soon die, completing the cycle of life.