Who Gives A Fish Forums

Discus are sensitive to noise and vibrations. Is the tank near a high-traffic area or loud appliances? Even a washing machine nearby can make them skittish. Also, how's their appetite? If they're eating fine, it's probably just temporary stress.

Re: Males or females?

Honestly, I'm no expert, but based on what I'm seeing, I think you've got two males on your hands. The one at the bottom, to me, is definitely a male.