Whether puffer fish needs oxygen depends on the breeding density and environment. Under normal breeding conditions, it is ok not to use oxygen. Because puffer fish's demand for oxygen is not too high, and its adaptability to the environment is relatively strong, it is ok not to use oxygen. However, if the breeding density is on the high side, the oxygen in the water will decrease, and no oxygen may affect their normal life. In addition, when the temperature is on the high side, the oxygen in the water will decrease sharply, and oxygen is needed at this time to ensure sufficient dissolved oxygen in the water.

1. Environment: Puffer fish has high requirements on water quality. Although it can adapt to a wide range of water quality, it needs to live in clean and refreshing water. It's time to breed artificially. It's necessary to keep the water clean so that they can grow better. Puffer fish likes to grow in a warm environment. When cultured artificially, it is best to keep the water temperature above 20 ℃.

2. Feeding: Puffer fish like to eat some live bait. Breeders can feed them some shellfish, shrimp, snails, fish and other foods, which are the favorite foods of puffer fish. Regular feeding can ensure their adequate nutrition. If there is not enough live bait, you can also choose some freeze-dried small fish, shrimp and other foods to feed.