My CB has not eaten since Monday. I came home from work yesterday and she was just hanging out at the bottom in one spot. I tried feeding and she didn't even seem interested. She has no discoloration or visable signs of any parasites including torn fins or anything. Normally she goes straight to the top and begs for food. She does move about the bottom a little but she is normally a free swimmer. My other fish are all fine. Water pars are all good. Ammonia 0, Nitrate (10) maintained a bit high but I keep it that way for the clam so this is not anything exceptional, Nitrite 0, Calcium 520, PH 8.2. Only new additions are 6 more Ast. snails, Red Carribean Conch, Tiger Conch and a Horseshoe crab. I am hoping this will pass but I know a fish is supposed to eat!