Tadpoles eat bread crumbs, rice, steamed bread residue and so on. They need to breathe air. It's better to plant some aquatic plants in the fish tank. You can keep them in a fish tank or a glass bottle and change the water every other day. Put a lot of small stones, and when they grow into frogs, jump on them to breathe the air. It's best to release them at this time. Never put tadpoles and small fish together. I caught a lot of tadpoles and small fish yesterday, and put them together. As a result, the small fish ate only five tadpoles out of 20, which was terrible.