The invention discloses a fry cultivating method for loaches. The fry cultivating method specifically comprises the steps of parent loach selection, parent loach cultivation, artificial spawning induction,
artificial insemination, fertilized egg hatch, loach fry management and loach fry treatment. According to the fry cultivating method for the loaches, spawning induction is performed with multiple kinds of
oxytocin, and the induced spawning rate reaches 100% by performing
back muscle injection with two needles; seminal fluid and spawns of the loaches are acquired through an
extrusion method, the female loach number is larger than the male loach number to enable the
sperm number to be equivalent to the spawn number,
hatching is monitored regularly, the fertilization rate reaches 87.4%-89.3%, and the
hatching rate reaches 96.3%-97.5%; loach fries are cultured by stages after breaking out of membranes, the feed feeding amount and the culture density are strictly controlled, and the loach fry
survival rate is increased and reaches 86.7%-87.8%; a pond is sterilized and disinfected with
traditional Chinese medicine, the
traditional Chinese medicine can be naturally decomposed and cannot be retained in loach bodies, and therefore eating is safe and healthy; parent loaches are sold immediately or prepared into dried loaches after being extruded, and therefore economic loss cannot be caused to farmers.