Shadow of Ronin (non-canon)
One notable Fangfish (stated by P.I.X.A.L. to be a mutant Fangfish) began terrorizing a seaside village and depleting their food source. The ninja were tasked with hunting the creature down using their Elemental Dragons, and had the captured creature sent to the Ninjago City Aquarium.
Ghost Story (dream)
- LEGO Ninjago: Shadow of Ronin (non-canon)
- Fangfish resemble catfish, except they are notably larger.