My female Guppy has developed these white spots, which, to me, don't look like Ich. They almost appear to be a little bit fuzzy, like maybe some type of fungus? No other fish in the tank have any sign of them (my Harlequin Rasbora's actually appeared to be courting for the first time ever), and everyone's behaviour seems to be normal. I don't have a QT tank available - her babies and some male Guppies are currently occupying it - so I've put her in a breeding box for now. Should I maybe try an Aq salt dip?