What kind of blenny was it? I've got Tim, the tail spot, but ivebonky seen him pecking at the rocks and overflow. Inappropriate Reefer on YouTube has a bicolor blenny that he thinks has been taking pieces of his monti cap out.
Black tribal blenny. Likes to hang out on my yellow leather and inside the pvc pipe I use for algae feeding. Suspected of ruining my LPS dreams......but it did allow me to buy a Butterfly my LFS had. He did good until he died several months back. Now I need a new one....