My male and female Swordtails recently had ick and I have been treating them with Quick Cure and doing water changes for about a week now. The ick seems to have gone away, they had a bunch of small white grains on them and now they have none. However, my male swordtail has 4 white dots on each of his pectoral fins that don't go away. He didn't have them when I first got him and they seemed to appear after the ick subsided. He's very active and has been eating normally. The spots also don't appear to be fungus since they are not cottony. Any ideas what this could be?