I have a 32-33 inch albino lungfish in a 600 who doesn't appear to be that aggressive. Just curious if I could get away with adding a school of 6-8 inch ATFS. Would the flow/Current be too much for it? I caught some really small bluegill that he is not even slightly interested in at all. Just lookin for tank mates or I might move it to a 240. Any thoughts?