Mountainous areas with good water quality, raising lean fish is the best, bulk stocking of large tetras, and then live water lean can be sold a few times the price. It is difficult to breed, low cost, and good sales. Rainbow trout is better to raise some, there are many rainbow trout in the tourist area of Huairou District in Beijing, and it has become a local specialty food. In the mountainous areas, rainbow trout is particularly demanding water quality for survival, the natural water pollution-free environment created by the natural growth of rainbow trout, personal advice, rainbow trout should be used as a priority breeding category.
Why not raise a kind of it, as long as the water source water is good, the amount of water, built a ladder fish pond, the head of the water to raise trout, the lower water to raise sturgeon, because the trout on the water quality requirements than sturgeon, the requirement is that there must be flowing water, so that the lower water oxygen content will not be low. Cold water fish all like to swim against the flow so the water volume must be large. The particle size of the feed will not only affect the amount of rainbow trout eating at the same time will also affect their taste, but also on the rainbow trout's digestion as well as intestinal tract has a great impact, so when feeding granular feed we must pay attention to the size of the fish in all stages of growth, feeding some suitable for them to eat feed.
, it will not allow the fish to better eat the feed and thus waste, and later will also be precipitated to the bottom of the pond, which will not only increase the amount of feed we put in, but also the entire ecological environment will be polluted, the rainbow trout for the amount of oxygen in the water also has a very high demand. But remember not to use ice water to cool down, because this has a very serious impact on the growth of the fish, the temperature is particularly low in winter, we also need to do a good job of pond insulation, if the water temperature is too low, it will also make the trout's growth is seriously hampered.
The rainbow trout feeds on crustaceans, small fish and shrimp, tadpoles, and terrestrial insects that fall into the water, and it also feeds well on artificially rationed pellet feed under artificial breeding conditions. The rainbow trout has a well-developed stomach, short intestinal tract and well-developed pyloric pituitary. It swims fast and is suitable for intensive culture with high yield. At present, there are more than 50 professional rainbow trout farms in Beijing, Heilongjiang, Shandong, Shanxi, Liaoning, Jilin, Shaanxi.