What kind of cold water fish is good for family fish farming?

It is best to keep cold-water fish in koi fish at home.

Koi fish is docile by nature, likes to live in groups, is easy to raise, and has strong adaptability to water temperature. It can survive in the water temperature environment of 5-30℃, and the growth water temperature is 2 1-27℃. Koi fish, like goldfish, has no strict requirements on water temperature and quality. The suitable temperature range is 2℃-30℃, but it can't resist the sudden change of water temperature. If the temperature difference suddenly exceeds 2℃-3℃, koi fish will feel uncomfortable. The optimum water temperature is 20℃-25℃. It needs sufficient oxygen and is suitable for living in a slightly alkaline and low hardness water environment. Koi fish is an omnivorous fish, which can eat mollusks, fragments of higher aquatic plants, benthos, even tiny algae or synthetic granular bait. It is best to feed synthetic granules, bait, bean cake, vegetable cake, bread crumbs, fish worms, clams, crab meat, duckweed, duckweed and so on. It is best to feed regularly.

Common carp is a highly adaptable fish, and koi fish has retained this characteristic. They can be raised anywhere from fish tanks to outdoor ponds, and they will soon grow to 30 cm or more, so it is worse to use traditional indoor fish tanks than round plastic pots. Koi fish is a cold-water fish, so it is best to raise koi fish in a hot place with a water depth of more than half a meter in summer. For general stocking of fish ponds, please refer to the koi fish density table for stocking fish ponds; The density of the aquarium is generally 60 cm× 30 cm× 15 cm, and six koi fish with a body length of 15 cm -20 cm can be raised. 90 cm× 30 cm× 50 cm can stock 8 tails; 110cm× 30cm× 50cm can be stocked10 tail.

With the change of seasonal temperature, the management methods in koi fish are different.

1. In spring, when the weather was warm and cold, koi fish began to recover from hibernation, and the breeding was moved from indoor to outdoor, but special attention should be paid to sudden cooling, covering with film in time to keep the water temperature stable; Plant bait is the main food, and the dosage is gradually increased from less to facilitate the digestion and absorption of koi fish.

2. It is hot and scorching in summer, so it is necessary to cover the plastic sunshade net to prevent direct sunlight. It is most appropriate to reduce the sunlight illumination from 8000- 12000 lux to 5500-5800 lux.

3. Autumn weather is less rainy and sunny, and the water temperature drops obviously, which is most suitable for the growth of koi fish and can increase the proportion of animals (protein), such as silkworm chrysalis. Increase investment and promote rapid growth.

4. In winter, the weather is cold. When the temperature drops to 0℃, koi fish should be moved to indoor fish ponds for wintering. Indoor water temperature should be kept at 2℃- 10℃. Pay attention to keep warm, feed properly and prevent diseases. The wintering period in koi fish is 1 1 to March of the following year.