Just picked up my new baby a 4-5 incher silver arow, my lfs that i got it at has another one the same size and same breeding. if i go back and get the other one should i worry about aggression between the to of them. they are in a 75 gal tank just to grow them out till they get put into a 240 + gallon tank. Has anyone had any problems with this. or should i buy 2 so i have 3 because i have read that 3 arow won't fight.