I recently just started caring for fish. I have a 20gal tank for 3 mollies (There were supposed to be 2 females and a male but the petstore thought one of the boys was a girl so now I have 2 males). The've been living good for a few weeks but my males caught ick, they're now treated and well. But my black female started turning white. Her tummy, fins, and scales on her sides are turning white! Not sure what this is. Please help! I toke her out of the tank and she's sitting in a jug. She's also been hiding in the cave a lot but has come out to eat every feeding.