Hey everyone! I've had a tailspot blenny for a few months now. Ever since I got him, he has flashed a bit on the rocks...some days more than others. He has has never had any outward signs of parasites...never even one white spot. Could this behavior still be related to a low-level infestation of parasites? I also read somewhere that blennies can exhibit this behavior for other reasons. I'm a tad worried...should I buy a cleaner shrimp for the tank? Thanks a bunch for any help!