Horrifying monster fish with 'external teeth, armour plating and

Dunkleosteus - Your Guide To The Giant Armored Placoderm

File:Dunkleosteus terelli - placoderm fish skull - Smithsonian Museum of Natural History - 2012-05-17.jpg - Wikimedia Commons

underwater fisch monster - Playground

Loch Ness Monster theory as Nessie is spotted abroad and woman 'solves' mystery - Mirror Online

Those ancient jawed fish had a mouthful of teeth, too

Dnd 5e monsters manual by William Vicentini - Issuu

Alligator gar - Wikipedia

What are the weirdest, scariest looking, and mind boggling deep sea creatures that we have discovered, or at least know about? How do they survive without photosynthesis? - Quora

Fish who eats everything thrown at it : r/oddlyterrifying