The Golden Catfish is a legendary Pirabia Catfish. After giving the Servant's Ring to the Piraiba Catfish in front of King Amaru's Aqueduct, it will have turned pure gold and become this legendary creature. Jean-Eric remarks that it would be the kind of fish GG would be. Whenever players return to Spirit Falls, this legendary creature will still be there more often than not, though it is replaced by a normal catfish occasionally. It is unknown when this occurs.