I bought a fish tank off of Facebook marketplace that came with fish. One of these fish was a single clown loach. When I first got him I noticed he was in great health and was swimming around. The more I have had him he has been out less and doesn’t seem to be eating as he is much thinner. I have feed flakes, 2 different bottom feeder pellets and frozen bloodworms. This is a 55 gallon tank and he is at max 3 inches. I am contemplating moving him to my 10 gallon tank that has a dwarf Mexican crayfish, 3 peacock gobies and 9 juvenile cherry barbs(around an inch). This would allow me to 1. Be able to look at him clearer as there are less places to hide and I don’t think I would have to worry about as much competition for food as he would be the biggest fish. I am aware this is two small of a tank but it my only real option as a hospital tank. Do you think it is a good idea for him and do you think the clown loach will harm any of my other fish?