CATDOLL : CATDOLL: What foods do Yangcheng Lake hairy crabs mainly eat?

What foods do Yangcheng Lake hairy crabs mainly eat?

A: Since the ecological environment of Yangcheng Lake is very good, it is very suitable for the growth of various aquatic animals and plants. In the past, Yangcheng Lake hairy crabs relied entirely on themselves to prey on a large number of living aquatic animals and plants in the water during their entire growth process, such as various floating animals and plants, water plants, snails, small fish, shrimps, river clams and aquatic insects. Now that there is enclosure farming, in order to increase production, farmers will take the initiative to increase the release of snails and river clams and the planting of aquatic plants in the enclosure, and will also add some corn, potatoes, wheat and fish, shrimp and other animals and plants to feed in the later stage.

How are pearls formed? (Details)

Pearls have always been regarded as rare treasures, so beautiful that people can't take their eyes off them, especially women. But how are such charming pearls formed?