Hi All, My clownfish has had white stringy poop for quite a while. I think since I got him, about 2 months ago. Since I'm new to this, I didn't realize it could be anything serious. Could it be an internal parasite? Or could it be a diet issue? He eats mysis shrimp, brine as a treat and pellets. He swims around all day, eats fine, looks fine, etc. Water is fine. Ammonia - 0, Nitrite - 0, Nitrate - 20, pH - 8.2. If it is, should I get the medicine that I can mix in his food? And if so, is it fine for all the fish to eat the medicated food? I do have crabs, snails, hitchhiker starfish, etc. so I don't know if the medicine would hurt them... Any help at all would be greatly appreciated, I'm very worried!