I got a baby hippo tang on Friday and he ate at the store and seemed to be fine. I got he home and set up in a qt and now he will not eat and is mostly laying on his side at the bottom of the tank. This morning I checked on him and he was standing on his head. I know tangs to crazy things but I don’t think he is ok. Ammonia was .5 on Tuesday so I did a water change. I have a lawnmower blenny and a banggia cardinal in the tank with him and they are fine. Please help.