Being a breeder of isabel zeb s, the pic looks like a hen isabel and a marked white male...then when i look closer it states on the bottom an isabel hen and a cfw male. so they are 2 differant colour strains..
But as I am not a full zebbie oficianado l.e Nsw chainsaw and amca , they may be able to elaborate if they are available in oz. The show I went to on the weekend only had normal isabels, but anything is possible in the book of zeb... Pete