One of my julii corys died last night. When i removed the fish from the tank, it looked normal except it was dead! I tested my water, and everything was fine, with an amonia with 0ppm. My pleco and the 2 other corys look to be healthy. Do fish just ever die for no reason? Please respond so that i can do a water change if something is wrong. Thanks.
P.S.
Now in my signature, I only have 2 corys
P.S.
Now in my signature, I only have 2 corys