- "The Colossal Catfish! Lives in the swamp. Sensitive to earthquakes. Bound to show up when the ground shakes."
- — Swamp Fishing Hole Poster description
It can be caught in the Swamp Fishing Hole on the Final Day. To make it appear, Goron Link must perform a Ground Pound on the pillar in the pond (which he can reach by hopping on the water as Deku Link). Once this is done, it will appear at the bottom of the pillar and can be caught with the Sinking Lure while wearing the Goron Mask.
The Colossal Catfish is based on the Wels Catfish, a large species of catfish native to wide areas of central, southern, and eastern Europe, in the basins of the Baltic, Black, and Caspian Seas.