| A viperfish is equipped with fang-like teeth and a large gape. |
| The viperfish lives in deep, deep water and the viperfish is very, very rare. |
| The viperfish is thought to use its sharp teeth to impale its victims by swimming at them at high speeds. |
| Humans have so rarely encountered a viperfish in its natural habitat that to date there are no photographs of one in its home in the deep ocean. |
| Sloane's viperfish are not known to be sexually dimorphic since the specimens caught are rarely sexed. |
| During the day, viperfish hunt deep down in the ocean, but at night they come up to shallower waters where food is more plentiful. |
