Ok so I have a cory (well 3) and they are in my quarintine tank (just got them so put in there before going in the 20, had them since last thursday so like 5-6 days) so anyway, today I noticed one of them is rolling (like a dog rolls) on the bottom of the tank (glass bottom besides some gravel used to seed the tank) I checked him and see no signs of white spots as my first guess was ick, plus none of the others are displaying this action. So is this normal? I would think not, what could be some things wrong with him or things I could look for? I'll keep an eye out for white spots (hard to tell with a white cory with only a few black spots (C. Julii) any help would be great.