illnesses

My white guppies, Marshmallow, is swimming in one spot on the bottom of the tank, uninterested in food or tank mates. Any ideas what could be the matter? Tail damage is old from a case of fin rot which was treated and seemed to start growing back slowly.

Hello all, I am messaging in with questions regarding my parrot cichlid, and their unknown illness. I believe he is male, and has always had a healthy appetite and great attitude, chasing and nipping my hand if I even touch anything in the tank! Recently he has been at the base of the tank just...