medaka? It is very difficult to distinguish between male and female medaka when they are small. Breeders need to wait for them to grow up before it is easier to distinguish between male and female. Usually when they reach 1.5 centimeters in size, their male and female characteristics will be more obvious. First of all, the male and female of
the medaka can be judged by their appearance. The anal fins of the male and female medaka are different. The anal fins of the female are curved, while the anal fins of the male are not. This is a more intuitive and obvious one.
Secondly, it can be judged by body size. The body size of adult female fish is not similar to that of male fish. Generally speaking, the body size of male fish is relatively larger, but only those born and raised in the same environment can be distinguished by this method.
Moreover, we can see their activity, the activity of male fish will be higher, especially when feeding and breeding, their personality differences will be very obvious.
Finally, we can see the changes in the breeding period. When the male fish is in heat, the pelvic fins will turn black, and there will be a black line between the eyes of the head. The female fish's abdomen will bulge slightly, and the amount of activity will decrease.
together? The male and female of the medaka can be raised together, because they are gentle. No matter the male or the female, their habits are the same, and they are all the same species of fish, so they will not attack each other. Moreover, it is very difficult to distinguish between male and female medaka in the juvenile stage, so they can only be raised together. If they want to be raised separately, they have to wait until they are mature.
