Fangtooth

The fangtooth, also known as Anoplogaster cornuta. It only grows to a size of about six inches in length. It has a short body and a large head. Its gruesome appearance has earned it the name, "ogrefish". The color of the adults ranges from dark brown to black. They are light gray in color with long spines on their heads. The fangtooth is an extreme deep-water species that lives at depths of about 16,000 feet. The pressure at these depths is intense and the water temperature is near freezing. Food here is scarce, so the fangtooth will eat just about anything it can find. 

Dragonfish

The Deep Sea Dragonfish, or Grammatostomias flagellibarba,It is one of many species known to inhabit the deep oceans of the world. This fish grows to about six inches in length. It has a large head and mouth equipped with many sharp, fang-like teeth. The dragonfish has a long barbel attached to its chin. This barbel is tipped with a light-producing organ known as a photophore. The dragonfish uses this organ like a fishing lure, flashing it on and off and waving it back and forth. Once an unsuspecting fish gets too close, it is snapped up in the dragonfish's powerful jaws. The dragonfish also has photophores along the sides of its body. These light organs may be used to signal other dragonfish during mating. They may also serve to attract and disorient prey fishes from deep below. The Dragonfish lives in deep ocean waters at depths of up to 5000 feet (1,500 meters).

Gulper Eel

The gulper eel, known scientifically as Eurypharynx pelecanoides, The eel's mouth is loosely hinged, and can be opened wide enough to swallow an animal much larger than itself. In fact, it is sometimes referred to as the pelican eel. The gulper's stomach can also stretch to accommodate its large meals. This giant mouth gives the eel its other common name of umbrellamouth gulper. The eel also has a very long, whip-like tail. Specimens that have been brought to the surface in fishing nets have been known to have their long tails tied into several knots. The gulper eel grows to a length of about two to six feet and is found in all of the world's oceans at depths ranging from 3000 to 6000 feet.