more likely they have ich or white spot disease or Ichthyophthirius. Do a google search under those terms. Also, if your are still unsure, do a google or AltaVista image search using those words.
If it seems that your mollies (which are very vulnerable to ich) might have developed it after being a little chilled or stressed on the way home, boogie to your petshop with great haste - don't speed ;) - and get their ich medicine. Apply as suggested.
A little salt (over priced aquarium salt, marine salt, pickling salt, cattle feed - sun dried salt, NOT table salt) wouldn't hurt. Also, mollies can take 80 degrees F. Did you have other fishes with them?
I would almost predict that new mollies would get ich this time of the year. That is one reason why your quarantine tank is such a great idea.
later maybe compare notes with:
A "Quick" Ich Update.
Posted on Thu Oct 9th, 2003 at 21:35:15 CST
Good luck