Hey, I bought a small red scooter blenny a couple weeks ago, and before long he had managed to squeeze out through my overflow box and made it all the way down to my sump fuge. He was hanging out under my chaeto and feasting on copepods. I figured that I would eventually try to catch him and put him back up in the DT, but for the short term I placed a loose mesh filter in front of the return pump, thinking that would keep him from getting sucked in by accident. Well, I guess it wasn't enough because I found him back up in my DT today, swimming around like nothing happened. How the heck did he survive that?!? I think he's one lucky SOB.