well the white spot could be Brooklynella but without better pictures I don't know could be marine velvet that other thing I don't know never seen that before but probably a parisite remove both of them and QT I would start treating with prazi-pro or para gaurd. if it is velvet these will have no afect youwill have to treat with copper.copper is the only thing that will eradicate marine velvet. then you have to leeve your tank divoide of fish for up to 3 months. if there is any other fish in the tank QT them also and treat them all. Anyone of them could also be infected and not showing any signs yet. Clownfish disiese is transferable to certine fish.
Link to cown fish disease...
http://saltaquarium.about.com/od/ich...ooklynella.htm

Bill