koi? The difference between male and female koi is quite obvious, mainly reflected in their body shape, genital pores, pectoral and pelvic fins and other parts, which need careful observation by breeders.
is the difference between male and female koi? 1. Body size difference: The body of male koi is thin and long, while the body of female koi is short, thick and full, and the abdomen is large. In the spawning season, this difference will be more obvious.
2. Head shape difference: The head of the male fish is relatively large and short, and the forehead will be slightly raised. The head of the female fish is small and long. The contrast is strong.
3. Difference of pectoral fins: The pectoral fins of male fish are relatively strong and strong, showing a pointed shape. The pectoral fins of the female fish are larger and oval. In addition, during the breeding season, the male fish will chase the stars (there are granular bulges in the pectoral fins and the first fin rays of the gills), and after the breeding season, the chasing stars will disappear.
4. Abdominal difference: The abdomen of the male fish is hard and flat, while the abdomen of the female fish is soft and plump. It can be distinguished by touching it with your hand.
5, genital aperture distinction: The genital aperture of male fish presents sunken shape, if squeeze with the hand, male fish can flow out milky white seminal fluid. The gonopore of the female fish is convex, and when squeezed by hand, only feces will be discharged.
6. Difference of spawning action: When spawning in the breeding season, the female fish will keep swimming to attract the attention of the male fish. The male fish will be more excited than usual, and will be intentionally close to the female fish. This is easy to observe.
