I noticed my less than a year old guppy, has been at the bottom of the tank and has lost her appetite. She has white things hanging off of her specifically her underside, mouth, and tail. She also has tiny tiny little reddish splotches on her. Could these be parasites? I have one male platy and another female guppy as well as two cory catfish and one snail. They all seem okay but the platy and guppy have large stomach areas and haven't been acting themselves either. Is there anything I can do to help? I really don't want to lose any of my pets.