THE VIPER FISH

The fish known scientifically as chauliodus sloani can be easily recgonised by its large mouth and teeth that looks like that of a fangtooth fish. The enormous fangs don't fit inside the mouth so they protude outside. They live 200-500meters below water during the day and less than 200m at night mainly to feed on crustaceans and smaller fishes.

The fish has a dorsal spine that extends throughout the body which is equipped with photophore, a light emitting organ which it uses to attract its prey by flashing the lights on and off after which it performs its magic on the meal with its fangs.

There are also photophores along the side of the fish for camouflage and meal. The fish was once seen motionless in water luring it's meal by flashing those lights. They are found in the tropical waters and the little we know about them came from the catches made.
It is said that they reproduce sexually with the female carrying the eggs.
What a rare deep sea predator