The methods of mixing tropical fish are as follows:

1. The same ferocious tropical fish can sometimes be mixed with the same size as the individual, such as map, crown, Shijian fish, etc.

2. The same kind of mild tropical fish can also be mixed, such as Zhaocai, Tanhu Liujian, etc.

3. Mixed breeding of large ferocious tropical fish and large temperate tropical fish, such as dragon fish and blood parrot.

4. Juveniles of large mild tropical fish and ferocious tropical fish, Adult blood parrot and Luohan Miao.

5. Polyculture of large tropical fish and small tropical fish, such as Lucky and blood parrot juveniles.