I ended up getting a Bi-color Blenny to help control algae and I think it is now my favorite fish! This guy cracks me up. He likes to sit inside the outflow tube on the powerhead when it isn't running and when it starts he gets shot across the tank like a cannonball out of a cannon. Not only that, he's noticed his reflection in a small shiny sticker on the powerhead so he is constantly fighting with his image in the sticker! He spends lots of time up there posturing and biting at the reflection. He is more fun to watch than most sitcoms...not that my TV is on anymore since I got my reef.