Today,my lone fish fry died of parasites. It was in a 10 gallon tank stocked with 9 guppies and 3 cories,tempature at 78-80, will test parameters in a minute.After I collected the fry,I glanced back in the tank and saw a worm about one inch long and less than a millimeter around swimming up the side of my glass like a sidewinder.It was a pale tan color.Several of my guppies have had red poop in the past few days.What should I do and what medicenes should I add?I really don't want any more fish to die and I was devastated by the death of my fry,Panda.