Two days ago, I posted a question about one of my fish not eating. Here is the link to this thread https://www.fishlore.com/fishforum/...4149-what-could-wrong-my-fish-not-eating.html. One poster suggested that i might have parasites because my fish's stomach looked concave. i had no idea that a concave stomach was a sign of a heath problem. That night I treated my tank with API General cure. Today I noticed that some of my fish have opaque looking poo. Does this mean that parasites are coming out? Is this a parasite or poo?