i have 5 cacas from a brood and have a 3 females (? sneakers maybe) and two males. I was wondering about compatability for the 2 males in a fairly complex 30 gallon (120cm long 40cm wide). at the moment they chase away but neither is sulking. would they just turn murderous later or because they are bros will they be ok? thanks. ps they are only an inch long at the moment.