having trouble with 2 of my fish,,water is fine,,,,noticed that 2 fish are scratching,,,been told ,,possibly flukes,,just noticed on one of the fish ,,its fin seems to have clamped up,,,and it has a bit of,,,,looks like a skin,,or fine cotton wool on the fin,,,any idea what this is,,,please help,,is it fklukes or something else,,going to do a water change and get some meds tomoz.........malawi tank 40 gallon
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