User blog comment:Mckrongs/Monster Hunter 4 for the Nintendo 3DS/@comment-4421067-20130531164953/@comment-70.56.21.252-20130601034042

Look at the end of the grown one's and the smaller ones "legs", they have yellow fins, which through the process of Metamorposis (weither complete or imcomplete), can infact be the previous versions now vestigial claws due to growing actual ones.