Hatching conditions of loach

Incubation: put the fish nest with eggs in a pool with appropriate density.

If it is a still water pond, it needs to be inflated to ensure sufficient dissolved oxygen for hatching. Ventilation is related to the density of eggs. If the density of fish nests is sparse, the quality of eggs is good and the aeration is small. On the contrary, the amount of inflation should be large. When the water temperature is about 25℃, the membrane can hatch in about 30 hours.

Under careful management, the hatching rate can generally reach about 80%. Three days after the larvae emerge from the membrane, the fish nest should be cleaned immediately and the larvae should be moved to a pool with good water quality for temporary cultivation. When the larvae are temporarily raised, they should be fed with cooked egg yolk, one egg yolk for every 654.38+ ten thousand fry, once in the morning and once in the afternoon.

Egg yolk should be crushed by hand, filtered with 120 mesh sieve before feeding. The residue should be removed before feeding the next day, and fresh water should be added before feeding. Larvae are normally reared in high density for 5 days, and then they can be transferred to the pond for feeding.

Extended data

Misgurnus anguillicaudatus is a kind of benthic fish, which likes to live in still water or slow-flowing water with mud at the bottom, such as lakes, ponds, paddy fields, ditches and reservoirs, and likes neutral or slightly acidic cohesive soil. The suitable domestic water temperature is 10-32℃, and the optimal water temperature is 22-28℃.

When the water temperature is lower than 10℃ or higher than 30℃, the activity of loach is obviously weakened; When the water temperature is lower than 5℃ or higher than 35℃, dive into the mud to stop activities. In winter, the loach burrows into the mud for 20-30 cm to overwinter, and comes out when the water temperature reaches 10℃ in the following spring.

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