Charging professional fees for a species I'm not familiar with varies with what the animal needs. If it's just a routine health check or minor infection, that's one thing, but if the animal needs an abscess drained, a biopsy, sedation for a radiograph, etc, I'm not dropping fees. Even if I've never seen the species before and don't know much about it, I'm still charging for specialized professional services. An exception would be a surgery that I haven't done before, or have very limited experience with. In that case I'll probably charge a lower rate.