Hi all, My first post here, though I've browsed a lot. My husband and I have a 100gal tank of African Cichlids. We have a Dempsey, Red Devil, Blackbelt, Green Terror, Parrot and Oscar. I know quite a mix, but the tank has done well. All of them are 6-8 inches currently. The Parrot and Oscar were introduced two weeks and while the Parrot did well (and continues to), the Oscar was horribly attacked overnight. (All seemed well before bed). In the morning I quickly fished him out (see first pic) and put him in a small 20 gal "hospital tank" alone and began treating him with Melafix to promote healing. As you can see he was badly injured. To my surprise he did well for the few days and appeared to begin healing. (I thought he was a goner). Well - then we had to leave town. No biggie. We have autofeeders / lighting, etc. Except I just got home to this. (See 2nd picture). He's black. Laying on the bottom mostly. And shockingly alive. Honestly I'm amazed he is..... But I've never seen this before. The 100 gallon is totally fine btw. Already did a 50% water change, the water was horrible and dirty. Didn't seem to eat almost at all, even though he was when we left. Thoughts? Advice? Help?