I imagine that would be a good reason for them to stop stocking Cons. To be honest though there are a lot of members in the Convict family. HRPs are great but there is also the Yellow Convict, Cryptoheros Nanoleutus (Spelling) that are more peaceful still than the HRPs.
With separating I would probs separate the male away but just see how it goes some males are totally fine, given that the males do get larger than the females if you can give the female plenty of places to hide where the male can not get in, they are really good parents. My male used to attack my arm during water changes, nothing serious just a little nip but a bit of a shock haha!
Wills