What are those white blobs floting in/on the water? Particularly noticeable in the 5th pic from the bottom. Looks like the same color as the gunk on the fish....and why do you describe the affliction as "flukes"?
actually what we need is mel_20_20 to drop by. She is the premier diagnostician in the group....I have no idea what that gunk might be and if it weren't for the fishes' odd behavior (gulping air etc) I would say "don't just do something, stand there." ie, water changes, make sure parameters are perfect, and let them get over it on their own. Which is what they (and most of us) do anyway.
actually what we need is mel_20_20 to drop by. She is the premier diagnostician in the group....I have no idea what that gunk might be and if it weren't for the fishes' odd behavior (gulping air etc) I would say "don't just do something, stand there." ie, water changes, make sure parameters are perfect, and let them get over it on their own. Which is what they (and most of us) do anyway.