What are my mollies up to?

[StuMcc99]

I have 2 mollies. 1 male and 1 female, the male keeps going up to the female and it looks like he's going at her fin at the bottom, is this something to do with breeding or not? The fin is fine not been bitten or anything.

 

[Samzter]

What size tank? With livebearers you should always have 2f per 1m. He will keep harassing her which could lead to her dying of stress. Depending on your stock and tank size I'd add another female.

 

[StuMcc99]

What size tank? With livebearers you should always have 2f per 1m. He will keep harassing her which could lead to her dying of stress. Depending on your stock and tank size I'd add another female.

It's 125ltr and have 16 fish in there.
Ok cool I will have a look about and get another female for the tank