Stinkyfish~
An upsetting creature even to his fellow subtalleons, whether it's the sickly glow, the exposed bones and chunks of flesh, or the stomach churning smell of pickled (not rotten!) flesh. Surströmming largely travels by himself, but is perfectly able to collude and collaborate.
He's experienced and a cruel fighter, as one must be ready to act when your enemies may smell you before they see you. His gut instinct upon seeing a kiji is to maul it back to energy not unlike a donkey, but he doesn't hate them. You'd exterminate rats whenever you see them, it's the same thing!