My smallest clown loach just passed away the same way a few of my other loaches have. They begin to have a fat stomach then they go to the top of the water for a day or two, then they die. My tank is a 40 gallon with two filters a aqua clear 50 and aqua clear 20. The temp is set to 79.5. The ph is 7.0 am is 0 nitrite is 0 and nitrate is 10. I took pics so you guys can examine him. I just don’t want my other loaches to suffer the same fate any help is highly appreciated.