I got a brand new 20L tank and set it up for my 3 females that are about the same age and weight(they are each in there own 10 gallons now). As soon as I put two of them in there one began smelling the other and eventually chasing and biting her on the tail. They are back were they were before now but I am wondering if they will ever be able to be together. I never even got the chance to try the other female. I really wanted to downsize on all the tanks, but it seems like everyone likes having their own.
Anything I can do or should I just give up?

