Chiasmodon Niger, Black Swallower Deep Sea Fish

The black swallower, Chiasmodon niger, is a species of deep sea fish in the family Chiasmodontidae, notable for its ability to swallow fish larger than itself (for which it is sometimes named the "great swallower").
It has a worldwide distribution in tropical and subtropical waters, in the mesopelagic and bathypelagic zones at a depth of 700–2,745 m (2,300–9,000 ft).