Finley looks like one of his hands got bitten off before I got him. Everyone else seems to have all of their toes webbed. I don't think I ever noticed of they weren't to begin with. And I'm pretty sure fin and Greer are my two males as try are the only two showing the white spots behind their arms.
I tried to zoom in on Finley and Greer. These were some of the first photos I took of them. Greer's hands were already webbed.