On Sat I purchased a male dalmation molly. At the store, he was very active. After acclimating him to my tank's temperature & water over several hours, I put him in. He was swimming around fine & eating food. Then Sunday morning, I went to feed the fish & he was upside down (still alive) near one of the plants with raggedy looking fins. What happened?!? It's a 5 gal tank, temp is around 76 degrees & only has 2 other female mollies. As a precaution, I took the molly out of the tank along with a bit of the water (so it wasn't so traumatic) & put him into a 1 gal tank with fresh water, a bit more salt & some medicated drops I bought a few months back when one of my mollies had fungus. What else can/should I do??? Please help!! I'd really like to try & save this beautiful fish