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一、生殖习性该鱼自然状况下的性成熟年龄一般为4年,人工饲养情况下也有3年达到性成熟的。初次性成熟个体的怀卵量很少,一般情况下只有数千粒。长吻(鱼危)的繁殖期为每年的4月底至7月上旬,5、6月份为繁殖的高峰期。繁殖水温范围为20℃—30℃,最适水温为26℃—28℃,当水温低于20℃或高于30℃时,苗种多畸形。二、人工繁殖长吻人工繁殖的成功与否,受许多因素的影响,在这诸多因素中,影响最大的则是
First, reproductive habits The sexual maturity of the fish under the natural conditions of age is generally 4 years, there are three years of artificial feeding to sexual maturity. Females with first-time sexual maturity have very few females, and in general, only a few thousand grains. The long kiss (fish danger) breeding season for the end of April to early July, 5,6 months for the breeding season. Reproductive water temperature range of 20 ℃ -30 ℃, the optimum temperature of 26 ℃ -28 ℃, when the water temperature is below 20 ℃ or above 30 ℃, the seed deformities. Second, the artificial breeding long kiss Artificial propagation of success or not, by many factors, in many factors, the most influential is