First seen in Day 189.

Rou encounters 8 of them in the Labyrinth City Aquarium's 【Age of the Gods Dungeon】 made by the 【Demigod of Spring Water】.

A huge fish of about 2 meters with a shell made out of scales that can harden and become like a metal armor and with teeth so strong that they can even crunch the Armored Scissors.

The dungeon strengthened the monsters by 2 levels, making them very tough.