Hey guys so all my fish are in QT atm since the last fish i added showed signs of ich, but now my clown fish is all bloated and seems lethargic swiming at or near the bottom of the tank. They are begin treated with copper atm. Not sure what if could be. Is dropsy an option or is that only freshwater? I did check water para. Ammonia .50ppm Nitrite 0 and Nitrate 5ppm.