How does silver arowana divide male and female?

As more and more people like to raise ornamental fish, some people are very interested in the silver arowana among the ornamental fish, especially the distinction between male and female, so how do silver arowana distinguish between male and female?

First, how to divide the male and female of silver arowana

1. Different body sizes

In general, the body size of male silver arowana is longer than that of female silver arowana under the same circumstances. It seems that in most biological species, males are larger than females.

2. the shape of ventral fin is different.

In general, the ventral fin shape of the male arowana is sharp and long, while the female is not very long and is not as long as the male.

3. Different shapes of abdomen

In mature arowana individuals, female arowana has eggs, so the abdomen is relatively dilated, which is also a more direct distinction between male and female.

4. Different head sizes

Male silver arowana needs to contain eggs in its mouth, so in terms of head shape, male silver arowana has a larger head shape.

5. The shape of the cheek is different

The female silver arowana can see a beautiful A word on the cheek, and the arrow part is shorter than the male, the male silver arowana A word is irregular, and the arrow part is longer.

These are the five obvious characteristics of how silver arowana distinguishes between male and female.