As a new breeding breed, rainbow trout has the characteristics of rapid growth, strong disease resistance, tender meat, and delicious taste. The original fish 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 the 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 selects adults above 2 years of age. Therefore, wintering culture (from October to February) is the key to breeding. The required water temperature is controlled at 25-26 °C. The water quality is good. Change the water 30% every week. The temperature difference should not exceed 3°C. Place a gas stone every 2 square meters and absorb the dirt 1 time per day. Feed pellet feed twice a day, about 3% of the fish's body weight each time. After a winter culturing, breeding can begin. During the breeding season, the temperature of the water increases to 28-29°C, and the male to female ratio 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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