I bought a 4" algae blenny from my lfs about 3 weeks ago, fat and healthy, to help with major algae in my tank. Well the little bugger is dropping weight fast and appears to not like the various algae in my tank. I cannot get him to take any prepared foods either. The lfs said he was eating for them, but did not eat when they fed him. They felt he had already eaten that day and I, like a fool, went ahead and purchased him. I figured with the 6 different varieties of algae in my tank something would appeal to him. He appeared to be eating off the rocks, glass, and sides frequently the first week. Since then he has really tailed off so I have been offering him a variety of algae and meaty foods to no avail. I am so bummed about this as I know that algae blenies will waste away if their food source is not available. I just can't believe with all the various choices he can't find anything that works for him. I feel now that he is so skinny he is refusing to eat at all and will perish soon. Any ideas or am I just screwed? I hate to see this happen as I am so very conscientious about my purchases. This time I really blew it and feel this little guy is paying the price.