The rosewoman, also known as the tide worm, the earth beetle, or the psyllid, is a small terrestrial crustacean belonging to the order isopod. The body is flat, oval in shape, usually gray or brown, and the surface is covered with a hard shell with multiple segments. The head has two pairs of antennae, one of which is longer and is used to sense the environment. Likes to live in a humid environment, such as stone, rotting wood or wet soil. It feeds on humus, dead leaves and other organic matter and plays an important role in the decomposition process in the ecosystem. The body structure allows them to live on land, but still requires a moist environment to keep the body hydrated.

The fiddler beetle is a unique species of beetle insect that lives in the tropical rainforests of Southeast Asia. The body length can reach 60-100mm, the body is flat, brown or black, with metallic luster. Shape resembles a violin, narrow head, "thin neck", wide wings, the overall appearance is unique. The larvae live in huge porous bacteria, will dig tunnels in the bacteria and pupate, the development period of up to 8-9 months. The adults are usually active between August and November, and are mostly found at dusk and at night. It is a predatory insect that feeds on the larvae of other insects and secretes a toxic butyric acid defense fluid to ward off predators.

It is a large freshwater fish species unique to North America, belonging to the Cyprinidae family. Large in size, it is one of the largest fish species in freshwater. Flat body, wide head, with a large mouth filled with tiny teeth, adapted to their omnivorous habits of feeding on plankton, insects, crustaceans, and other small fish. Widely distributed, it can be found in rivers, lakes, and reservoirs from the prairie provinces of Canada to the Midwest and Southern states of the United States. I like to inhabit water bodies with slow water flow and sediment at the bottom. Such environments are rich in food and suitable for growth and reproduction. It is one of the favorite target fish species for fishing enthusiasts.

It is an ornamental fish loved for its unique appearance. The body is flat, especially its long dorsal and caudal fins, which when unfolded resemble the wings of a butterfly, hence its name. Originating from Asia, especially China and Japan, it is very popular in aquariums and is often used to decorate and beautify aquariums. They have specific requirements for water quality, temperature, and food. I like clear and warm water environments, and I need protein rich foods such as small insects and fish food. In addition, butterfly carp has a gentle personality and is suitable for co feeding with other gentle fish species.