I'm a little afraid some of my fish have a problem. I posted a thread a while back about some red spots on my platy, and now his gills are pretty red. A few of the other fish have reddish gills now, and I just caught the original red one scraping on a rock. I've googled and some sites said to treat for parasites, some said to treat for bacteria. I was planning on doing a broad treatment for that would either kill both, or one for bacteria and one for parasites. Any suggestions on what the best medicines are?