My girlfriend put a bunch of lotion on her hands, and like 30 minutes later reached into the tank for some weird reason.
Anyway, the lotion or oils or whatever you want to say coated the top of the water, thus oxygen could not really get in. (I didn't have an airstone going at the time and this is FW
). So anyhow, the fish all went up to the surface and started biting at the surface, trying to get oxygen. They were trying to breath really hard. I noticed it...figured out what the problem was and fixed it by skimming the oil off the top with a towel, doing a pwc
, and adding an airstone to the tank.
Lost a parrot fish in that little escapade.