My Dwarf Puffer is acting sluggish these last couple of days. He is laying on the leaves of plants and doesn't seem to be eating, as snails are going untouched and he isn't going after bloodworms like usual. I noticed a tiny spot of blood in his eye yesterday but it seems to have disappeared. The little guy just stole my heart and I'll be so sad if he goes. If anyone can shed some light I'd appreciate it.