|Novel||Naruto: Mission: Protect The Waterfall Village! (novel)|
Ryūrimaru (龍鯉丸, Ryūrimaru) was Hisen's summoning creature that appeared in the light novel adaptation of Mission: Protect the Waterfall Village!. Ryūrimaru was summoned by Shibuki in his battle against Suien.
Ryūrimaru is a crimson white catfish that was six times the size of a human man.
Ryūrimaru was obedient and loyal towards his contractee, Hisen.
Ryūrimaru had the ability to use the Transformation Technique. With Hisen saying, "Dragon God Transform", Ryūrimaru transfoms into a giant golden dragon.