Sebastian read about Jade-Toothed Fish during his stint in the Anemone Domain when he had access to the library that was originally exclusive to the head anatomist, Doctor Craban.
This was another extremely bizarre species of fish that was in the rarer spectrum of fish with an above-average bloodline for destruction.
They were born with natural jaws that were bigger than the other parts of their body. This was not their most prominent feature though; their most prominent feature was their jade teeth.
The Jade teeth of this fish werewere their most prominent feature. Teeth that werewere so big that the mouth had to stay open to contain them were no friendly stuff.
Legends say that the teeth of Jade-Toothed Fish could bite through anything, even through the unbreachable barriers that led to the next planetary dimension.