Rainbow trout (Oncorhynchus mikiss) is a cold-water fish of Salmonidae, and it is one of the most widely cultivated fish in the world. Because rainbow trout is the most suitable for artificial intensive culture, with the characteristics of high yield, high efficiency and broad market, rainbow trout culture has developed rapidly, and the culture area and output have increased year by year. There are farmed animals in the town next to my home. I wonder if it's the same kind. When I went to the farm, I asked the owner of the farm, saying that this kind of fish has very strict requirements on the breeding environment, water quality and temperature, and the water is a long-flowing spring. If cultivated improperly, the mortality rate is high.
We have a rainbow trout farm here, which has been open since childhood. Business is good. Rainbow trout is expensive and delicious, and it is the first choice for many people who like to eat fish. This mainly depends on whether you have breeding technology and local natural conditions, such as water flow, water quality, temperature, altitude, local pollution sources and convenient transportation.
The water quality in mountainous areas is good, and the best general length-width ratio of lean fish is 8: 1- 10: 1, and the appropriate ratio can be determined according to the terrain. Keep a certain slope (1/50-1100) from the water inlet to the water outlet, which is convenient for water exchange and sewage discharge. The layout of falling water can be arranged by terrain classification between pools. Four big fish are imported in batches and sold several times after losing weight. It is difficult to cultivate, with low cost and good sales. The pH value in the water is preferably between 6.5 and 6.8, and the salinity is adjusted according to the different growth stages of rainbow trout. Generally, young fish can adapt to 5-8% salinity, and adult fish can adapt to 30% salinity.