Can blood parrots be mixed with koi?
Some people ask, can blood parrots be mixed with koi? The answer is yes: these two kinds of fish are not suitable for raising together at all. There are three reasons:
First, because the blood parrot is a tropical fish, Koi is a cold water fish, the temperature requirements are different.
Second, blood parrots are particularly afraid of lack of oxygen in water quality, and the oxygen demand of koi is also very large. If your tank is small, it should not be mixed.
Third, the blood parrot is a fish of the family Sparidae, which is aggressive to a certain extent.
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Breeding techniques of Carp Koi
1. Choose parent fish, and brocade carp, as ornamental fish, should select parent fish purposefully. Koi mainly watch the back, so it is best to choose the upper and lower flat, the profile is flat oval, the whole is spindle-shaped, and the color is based on the breeding purpose to select the corresponding body color of the parent fish. 2. Prepare the spawning pool, and generally use the small cement pool as the spawning pool. The shape of the pool is unlimited, the size is 4 meters high, 4 meters wide, 0.8 meters deep, and the water depth is 0.4 to 0.5 meters. Breeding water pH 7.2-7.4, brackish, low hardness
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Methods of controlling the sex of fish
Controlling the sex of fish is an effective way to increase fish yield. In general, the use of sex hormones can induce the sex of fish to develop in the desired direction. There are two kinds of sex hormones, testes secrete androgens, ovaries secrete estrogen. The primitive reproductive epithelium of fish has two components of the medulla that determine the development to female and male. Under the action of estrogen, the cortex becomes ovary, the medulla is undeveloped and the female has the function of spawning and reproduction; on the contrary, under the action of androgen, the fish will become male. Therefore, in the hair
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