white spots on 7 days old glofish

I'm a newly fish lover, I have a 3 gallons tank with 2 glofish tetra. I plan to upgrade to a 10 gallon tank soon, but the issue is, they are 7 days old fish from petsmart (they never told me they are schooling fish and that probably one was going to bully the other-_-). I notice small white dots...