Despite its overblown menace – with the piranha more likely to end up as part of your dinner than vice versa – you wouldn’t want to spend too long in Amazonian waters with an open cut to whet this fish’s appetite. Feeding frenzies against larger animals do happen, and this fiend will bite and maim without a second invitation.
2. Anglerfish (up to 2 feet)
Fish don’t come much more monstrous looking than the deep sea Anglerfish. Lurking far below the surface of the ocean, this bony beast of a fish is so called because of its distinctive method of catching prey using a fleshy lump that protrudes from its head like a fisherman’s lure. The Anglerfish is able to cheekily wiggle its growth so it appears as prey to other predators, the bait made even more alluring by the fact that it emits bright bioluminescent light. When the unsuspecting victim stays close enough, the anglerfish devours it whole, jaws triggered automatically by contact with the decoy.
Gone fishing and gulping it down: The Anglerfish
That cavernous mouth extends right around the Anglerfish’s head, its jaws armed with long, pointed, inward-folding teeth that allow easy access to the stomach but no escape from the mouth. This machine-like predator can expand its jaw and stomach to a huge size, enabling it to gulp down prey even bigger than itself.