I have 2 parrot cichlids about 5-6 inches that are semi-aggressive (not very in my point of view) I have 1 Normal/blood red and 1 a flowerhorn hybrid (looks like daddy flowerhorn and acts like mommy non-aggressive). I was wondering if i could get one from my LFS it is about 3-4 inches. Can i add that small one or do i have to look for something a little bigger? Thanks in advance Dr.B