The invention discloses a technology for actualizing the inverse season hybridization fry breeding of
java tilapia in a
greenhouse constructed in winter, which belongs to the aquiculture industry. Theinvention is realized according to the biological characteristics that the sexual gland of the parent fish of the
java tilapia which only eats baits at the
water temperature below 23 DEG C can not develop, and the sexual gland begins to develop when the
water temperature reaches 23 DEG C and is stabilized at more than 23 DEG C so as to lay eggs and hatch fries. The characteristic that the temperature of the
greenhouse of a
fish pond in winter can be increased and preserved at more than 23 DEG C is utilized. The heat-insulating property of the
greenhouse is good and can reach the physiologicalrequirement of the growth and development of the
java tilapia. Along with the raise of temperature at the beginning of spring, the
water temperature in the greenhouse is raised more quickly and is stabilized at more than 23 DEG C. Therefore, the pure bred fries of the java tilapia can be hatched by adopting an inverse season fry breeding technology. The fry emergence period of the fries of the java tilapia can be advanced by 2 months for fry emergence by utilizing a greenhouse indoor
temperature control fry breeding technology in winter, the greenhouse constructing cost is low, the managementis convenient, the technology is easy to master, popularize and universalize, the
operability is strong, and the lowering of the breeding cost is an effective approach for enhancing the breeding superior variety coverage rate of the java tilapia, increasing the yield and enhancing the quality of a product.