How does red swordfish divide male and female?

Red swordfish can be divided into male and female in two ways. The first is to look at the size, slender body, bright color is the male fish, fat, inferior to the male female fish. The second is to look at the fin, there is a sword under the caudal fin of the male fish, the ends of each fin are sharp, the most obvious is that the anal fin has been transformed into a sexual copulator, the end of each fin of the female fish is more round and obtuse, there is no sword under the caudal fin, there is no outstretched copulator, and the cloaca is more obvious.

How to tell that the red swordfish is going to give birth?

1. When the belly of the female fish is dilated and there is black fetal plaque, it is a sign of labor, and the male fish can be waterlogged out. Generally, the young fish can be born after 1-2 days.

2. the belly of the fish will swell and do not like to move. when the male fish approaches her, he will bite and drive him away. Red swordfish and peacock fish are similar, are oviparous, directly give birth to small fish, but will eat cubs.

The above is the introduction of red swordfish how to divide male and female. I hope it will be helpful to everyone.