This is the operculum, fish gill protection bone. You can
Quests, TibiaME Wiki
Fish Bone - Official Planet Explorers Wiki
Kilmaresh Mountains, TibiaWiki
Main Quest Guide, Seal Online Wiki
Fish Bone, Seal Online Wiki
Fish Bone, Seal Online Wiki
r Creature (Hushike), Creatures of Agartha Wiki
Ruki Physbones (PC, QUEST)