Hey thanks PP! I was wondering though, would a 55 gallon be big enough for these 2 to live happily?? Right now I am seeing a submissive fish who is hangin behind the heater. H/S only comes out when I am near. I am really disappointed in PetSmart for advertising these fish as being only 4 inches max size. I may get a bigger tank this weekend, but I hate seeing fish who are forced to stay in a part of a tank that is not normal to them. I may trade them off for some others if I can't get the bigger tank. That is why I sold my firemouths to a lfs. WHAT TO DO!!!!!! AHHHHHHHHHHHHH!!!!!!!