Looks like Brooklynella, and a pretty advanced stage of it. The clownfish needs treatment ASAP. Formalin dips are the standard treatment. Please review the stickies at the top of this forum for details. The foxface looks like it has Cryptocaryon (ich), but it has also been exposed to Brooklynella and needs to be treated for that first.
Treatment will need to be carried out in a dedicated QT, as the medications involved are harmful to invertebrates.