Water Wraiths were a type of small, aquatic, fish-like Rahi with poison covering their outer shells.
Makuta Teridax once used the Water Wraith as a metaphor for the other Brotherhood of Makuta members, some 80,000 years before the invasion of Karda Nui. A Water Wraith would often allow itself to be eaten by larger Rahi as an aggressive tactic. The Wraith's deadly poison would kill the larger creature from the inside and the Water Wraith could then feed until a larger being ate the corpse.
- Into the Darkness - Mentioned only