Hi all! I am new to this app and I need some advice over some troubles with my platy fish. I have three male platys (I shouldn't have made it an odd number but at the time I didn't think it would cause issues, also they are three males as I didn't want to add females due to breeding and dealing with babies, I'm still new to fish keeping) and it was going great, no aggression between any of them, all swimming together it was going well until the past two weeks where the smallest platy (A) started becoming aggressive to my other new fish (B), I separated him from the tank for a couple days and then reintroduced him, but shortly after, B started being aggressive to my original fish (C), I tried to take him out of the tank but once I did A started picking on the original fish too, there doesn't seem to be any cuts or nips on the fish but pushing the fish into the filter or going underneath the fish and pushing him up to the top of the water kind of stresses me out so I'm really not sure what the best thing to do is. I did some water tests and things seem to be fine and add in new ornaments so they don't get territorial and apart from that I've not changed anything else and so I can't think what else it could be apart from them being all males and the same species of fish. My pet store has a no return policy so any advice on how they can live together peacefully would be much appreciated.