I have a 55g tank with a dempsey, firemouth and an elctric blue in it. I have the opprotunity to get some clown loaches...which ive been eying and wanting for some time now. They are about an inch long, so in the mean time i will house them in the 20g and move the fish out of there to another tank. I will get three because I have read they are a schooling fish. Once they have grown to a large enough size will they be ok in the 55 gallon tank with its inhabitants? Another question how fast do they grow? And I have read they get to 12 inches has anyone had any this big or is this ust the size they could get.