Largemouth bass, also known as California bass and largemouth bass, is a freshwater fish native to North America. The body is flat on the side, spindle-shaped, with thick back flesh, the color is cyan or olive green, and the abdomen is white. The mouth is large and has a strong predation ability. Is a typical carnivorous freshwater fish, mainly to small fish, shrimp, crab and other invertebrates for food. It inhabits grassy still-water lakes and streams and prefers to group in clear, slow-flowing waters. Fast growth rate, strong adaptability, wide tolerance to salinity, can survive in fresh water and low salinity brackish water. The meat is delicious, no intermuscular thorns, suitable for eating, and has high economic value.

Striped bass, also known as silverfish, is a large economic fish native to the east coast of the United States. It is an anadromous fish that lives mainly in the salt water of the ocean, but enters freshwater to spawn. The body color is silvery white, the back has 7~8 black longitudinal stripes, the body is slender, the largest individual can reach 2 meters long, weighs 57 kilograms. It is a carnivorous fish that feeds on small fish, shrimp and crustaceans and has a strong predation ability. It is a nocturnal animal that is particularly active at night and often preys at night. With fast growth and strong disease resistance, it is an important species in American aquaculture and has been introduced into China in recent years.

It is a colorful butterfly larva. Usually living in tropical and subtropical regions, it is known for its unique colors and patterns. Their body color ranges from deep blue to green, and they are covered with bright yellow or white spots that help them camouflage in natural environments and avoid being discovered by predators. It mainly feeds on plant leaves and grows rapidly. After several molts, it eventually enters the pupal stage. In the pupal stage, it undergoes a complete transformation from a caterpillar to a beautiful deep blue tiger butterfly. Adult deep blue tiger butterflies have broad wings with distinct colors and patterns on them.