1. Do you need a heating rod for fish farming in winter If you raise wide-temperature fish, you don't need a heating rod as long as the outside temperature is not lower than 0 ℃. If you raise tropical fish, you still need a heating rod in winter. Tropical fish have high requirements for water temperature, which is usually kept between 20-30 ℃. Some low-temperature tolerant species can tolerate the water temperature of 16 ℃, but lower water temperature will also affect their health.
2. What kind of fish to raise with a heating rod1. Fairy fish: Fairy fish is also called swallow fish or angel fish, which is a tropical ornamental fish from South America. Its dorsal fin and anal fin are very long, and it looks like a swallow flying. Because this kind of fish is gentle in character, quiet at ordinary times and suitable for polyculture, it is also called the Queen of Tropical Fish, and the feeding water temperature should be kept between 26-32 ℃.
2. Guppies: Guppies are common small tropical fish. Males are slightly smaller than females. They have strong adaptability and can endure dirty water. Its temperament is mild, usually lively and short-lived, but its reproductive ability is very strong, and artificial breeding is relatively easy.
3. Parrot fish: Parrot fish is a kind of tropical ornamental fish bred by hybridization. This kind of fish is suitable for raising in weak acidic soft water. Because its mouth cannot be closed and its ability to control water flow is poor, it has high requirements for dissolved oxygen in water. If oxygen is insufficient, it cannot breathe.
