About 2 months ago I purchased a Lawnmower blenny place him in my tank (up for 3 years) He started out fine, eating well and getting along well with his tankmates. Recently I notice that he was becoming very thin. I did all the reasearch and nothing seemed to be working. Nori (from asian mkt), Nori (from LFS), Marine One sinking pellets, Mysis, Brine and so on without any interest from the blenny. I had almost given up when I saw him perched on the algea clip so I took a small piece of Nori and offered it directly to him and to my surprise he actually started to eat a little, then he got carried away with attacking my fingers. He will not touch the nori in the clip but now he is feeding from my hand, he will also feed if I wrap small pieces around the floating thermometer and secure it with rubberbands. Just thought this might help others with similiar issues.