Convict sexing

How do I tell the different sexes on a convict chilid

 

Females are usually a lot smaller than males, and will show orange/red markings on their bellies. This can range from small spots to an overall blush that can cover the entire belly. Males will also sometimes show the orange markings on their belly just like females, but they are usually far smaller and much less prominent that on females.

Males are generally much larger than females and will show long extensions on their dorsal and anal fins. Females will also sometimes show the long fin extensions that males do, but this is fairly uncommon.

 

THis is weard still not sure about what sex they are tried to look but not able to tell the diference.

The problem is that the one keps chassing the other arround plus last night is changes into a silvery grey color? HTe other one stays the same it's fins are a bit torn, should I be worried will the one kill the other. Is this breading and does that mean there different sexes.

 

The larger one, chasing, is the male - it's colours should also be darker.
The fin nipping is normal with convicts.-nipped fins-normally female or younger male.

 

I think it's the femail nipping the male?