As per Wiki,
The Lizardfishes (or typical lizardfishes to distinguish them from the Bathysauridae and Pseudotrichonotidae) are a family, the Synodontidae, of aulopiform fish. They are found in tropical and subtropical marine waters throughout the world.The species is not targeted and is usually caught when fishing for other species. They can be classified as a nuisance and will tackle any size plug without a problem.
Some people call this Lizard fish as a smaller predator fish that lives in the depths of the water. They are found throughout the world. The Lizard Fish has a very short dorsal fin, a small fatty second dorsal fin and a caudal fin which bursts a very deep fork in it.
Lizard fish are what is known as an ambush predator, which will sit on the bottom and wait for their prey to come tot hem before grabbing it in very sharp toothed jaws.