Place of Origin:Redwall Abbey Pond
Death: Starved after swallowing one of the Tears of all Oceans
Appears: Pearls of Lutra

Grimjaw was a large male grayling who inhabited the pond of Redwall Abbey. He was the foe of Fermald the Ancient, who desperately wanted to catch him, and presumably eat him. He was clever enough always to avoid her attempts. He had a mate who was fanatically devoted to him, refusing to leave his skeleton even long after he died. He is the only Redwall fish definitely known to have a devoted mate.

Grimjaw was killed when Fermald dropped one of the Tears of all Oceans into the pond and he swallowed it. It lodged in his throat and he became unable to eat, and died.

Not to be confused with Groojaw.