misread ur original post and thought you named it that, lol. what type of testing kit are you using? any swings in temp, pH, or salinity?
Lol, Its the kind you put the water in the viles and put drops in. I don't know what the name of it is. But everything tested good , the temp is good. The salinity is good. The only thing I can think of is I did a water change saturday and maybe it stressed him out. IDK. He seemed ok yesterday. He was eating and everything.