+1 w/jef4y I had a few in my tank and over a period of about 6 months the population just exploded it got to where I could count 50 on the glass at any given time. I purchased a harlequin and he absolutely destroyed them in about 60 days. I don't see how that little guy can eat so much. But he did, still some left but I may soon have to supplement his diet with chocolate chip arms we will see. Good luck