This looks like a member of the recently separated genus Haworthiopsis, and not Haworthia. I will be proposing the image be moved to the other entry.
Haworthiopsis
It is H. reinwardtii or H. coarctata. Not sure exactly which, but I'd guess the former. In any case, the genus entry for Haworthiopsis should do. More info about the recent change in the comment under that listing.
