Ku

The Cyclops Fish (Ku) is the Dark World counterpart to the River Zora in A Link to the Past. There are fewer Cyclops Fish in the Dark World compared to the River Zora of the Light World, but their attack patterns are the same. Both pop up out of whirlpools to fire a single fireball at Link before disappearing under the water again.

In Four Swords Adventures, River Zoras encountered at Lake Hylia and the The Coast resemble more Cyclops Fish, having a single eye.