Bicolor blennies are really cute. I was going to get one, but I got a yellow watchman goby instead. They look a lot like blennies and they are the BEST!!! . I have several holes going through my LR that are just big enough for him to go through (he is small right now), and he sits in them watching the front of the tank. He is not shy either. OK, so enough about gobies, but my point is that their are some really great blennies, and some watchman gobies that look like them too. Just an interesting alternative.