2 Days ago I bought a yellow watchman goby. The morning after I got him he was acting fine and eating normally, however, when I got home from work that night I noticed that he had somehow managed to get a rather extensive injury to his bottom lip. Being that he is the only thing in the tank besides LR and a few snails I have no idea how he managed this. He got really pale, but I kept the lights off and slowly his color is returning, and now he is almost back to normal, But he still won't eat. I am trying to keep the lights off as much as I can to reduce stress, but I would really appriciate anymore suggestions. Thanks everyone!