I am thinking about adding lawnmower blenny to my tank. I heard about great personality of this fish and great hair algae appetite people admire it for... One thing I am affraid to is miss-id this fish in LFS. Are they any characteristic details I can look at to not make a mistake buying a different fish? I have seen eyelash blenny on www.reeftopia.com and the picture is so similar I bet would never recognise which is which if I saw them both in one tank in LFS... Anyway - should I be worrying at all? Maybe all these fish have same great appetite for hair algae and the exact species is not very important? Will eyelash work as a "mower" on my live rock "lawn" as well??