User blog comment:Kogath/Monster Hunter Frontier G7 Discussion/@comment-6050823-20150331101039/@comment-4009941-20150401043446

But both of them already use fire and the moss just means stuff just grew on it's back from sitting there. Gravios would not have moss on him because he walks directly into lava normally. Both grow into normal Gravios. And lets not forget Basarios had plants growing on them in frontier way before MH4 had a mossy Basarios.

This one is using water and still has plants growing on him