@FunkyGibbon Because the Skywalker was first described in January 2017,so all of the Skywalker gibbons used to be described as Eastern hoolock gibbon(Hoolock leuconedys) in all zoos and museums in China. So this gibbon in the photo is signed as "Eastern hoolock gibbon",too.But according to the features such as the shape of its eyebrow and some white or grey hair on its butt,it is really a Skywalker.
In fact,in China, many hoolock gibbons are Skywalkers,but they are mostly signed as "Eastern hoolock gibbon".
