As a new breeding breed, rainbow trout has the characteristics of rapid growth, strong disease resistance, tender meat, and delicious taste. The original species were imported from Malaysia, and the price of fish species was high. Now domestic artificial breeding has been successful, which not only reduces the production cost, but also avoids the damage of fish during transportation and improves the survival rate.
The breeding techniques of rainbow trout are introduced as follows: Rainbow trout is a hot water fish, and broodstock chooses fish older than 2 years old. Therefore, wintering cultivation is the key to breeding. Requirements of water temperature control in 25-26 °C, good water quality, changing the water 30% per week, the temperature does not exceed 3 °C, the pool every 2 square meters placed a bulk gas stone, a day to attract pollution once. Feed pellet feed twice a day, about 3% of the fish's body weight each time. After a winter of cultivation, breeding can begin. During the breeding season, the water temperature increases to 28-29°C, and the ratio of male to female is 1:1. Spawning of females is mainly at the junction of the bottom wall of the pool, and females guard the eggs. Each group of broodstock lays 1000-2000 eggs, and the natural hatching rate is about 70%. Generally about 60 hours after emergence, fry after one week Feeding on the surface, the broodstock should be separated in time to prevent it from being eaten by female fish. After meticulous cultivation of 1-2 months, bred to specifications 5-10cm / tail fish species.
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