Taiwan loach fertilized egg hatching method without changing water in whole process

The invention relates to a Taiwan loach fertilized egg hatching method without changing water in whole process. According to the method, the temperature of water for hatching is maintained at 23-26 DEG C, and Taiwan loach fertilized eggs are sprinkled on a yarn frame of a hatching pool; the Taiwan loach fertilized eggs are hatched, when egg membranes start to be dissolved, a parathesin mesylate solution is sprayed in the hatching pool, the concentration of the water for hatching thus reaches 1-2 ppm, and the water for hatching is also heated by 1-2 DEG C; after all of the egg membranes are removed, the yarn frame is taken out, an oxygen-increasing machine is kept in an off-state for 10 +/- 5 minutes and then turned on, heating is stopped, high-efficiency EM bacteria are sprayed to adjust the water quality, and the fertilized eggs continue to be placed in the hatching pool for 60-72 hours. By means of the method, water conservation is achieved, the hatching rate is high, the egg membranes can be thoroughly rem