I could use some advice. My Foxface and Striped Cardinal are both showing a pinched belly. I upped feeding a week ago, but no real change. The Foxface might be improving a bit, but the Cardinal seems to be getting worse. Scary thin. They are both eating fine and swimming as normal. No sign of fighting or stress. No new fish in a long time. I feed a wide combination of good frozen, dry flake, and some seaweed. I was suspecting worms, but no other fish seem sick, and no signs of stringy poo. Any thoughts? If worms, best advice on how to treat it? Best medication? Any good pre-medicated food? Hopefully done in main reef tank.