My bunny bam had mites when I first got him. Threre were white-yellowish “crusts” – not very visible, but readily felt with my fingertips. There was also dandruff, of course and some hairloss. (I did two rounds of treatment and we never saw any mites again). This looks a lot more like just dry skin to me, but as Jersey says, selamectin can be given even if you’re not certain there are mites. It’s bunny safe. Use kitten dose. In many countries selamectin (Revolution, Stronghold) is prescription only, but in for example Australia it’s OTC, so the availability varies across the world. If selamectin is not available at all in your country, ivermectin can be used. Selamectin is a derivative of ivermectin.
I know you know this, Kurotta, but others that are reading the forums might not, so here’s the warning we always issue when antiparasitics are discussed:Never use any compound containing Firpronil on a bunny. Fipronil is sold under a whole host of brand names, among others Frontline and Sentry. Fipronil is deadly toxic to rabbits but safe for cats and dogs.