I just bought a 3 inch redtail catfish, andi currently have oscars in the tank (about 5 inches or so) not big enough to eat the redtail so everythings safe there. ive raised a few sets of oscars before but never had anything in the tank but a pleco. But my question at hand is: once my redtail starts growing (which im fully aware its going to do, and fast) will it bother the oscars? i currently have two 55 gal tanks but all fish are in one. do you think i will need to separate them eventually? plz help! thanks!