A few days ago, I noticed that one of my balas was really pale. I thought it might be stressed out because of my water params, but I tested them and everything is 0 except my nitrate, which is 40ppm. It has been three days since then and none of my other fish (including my other balas) are showing any signs of stress, but it is still abnormally pale. Here are some pics. It is more noticable in person than it is in the pics.
