David Shale / Greater silver hatchet fish (Argyropelecus gigas) Mid-Atlantic Ridge, North Atlantic Ocean

Norbert Wu / Slender Hatchetfish (Argyropelecus affinis) deep sea, San Clemente Basin, California

Norbert Wu / Viperfish (Chauliodus sp) chasing Hatchetfish (Sternoptyx sp) deep sea

David Shale / Deep sea Hatchet fish {Sternoptychidae} Atlantic ocean

David Shale / Greater silver hatchet fish (Argyropelecus gigas) head profile, Mid-Atlantic Ridge, North Atlantic Ocean

David Shale / Ventral view of Hatchet Fish {Argyropelecus hemigymnus} from 2666 - 0m, Mid-Atlantic Ridge, North Atlantic Ocean

David Shale / Close up of abdomen of Greater silver hatchet fish (Argyropelecus gigas) showing ventral light organs, Mid-Atlantic Ridge, North Atlantic Ocean

David Shale / Greater silver hatchet fish (Argyropelecus gigas) Mid-Atlantic Ridge, North Atlantic Ocean

David Shale / Hatchet Fish {Argyropelecus hemigymnus} from 2666 - 0m, Mid-Atlantic Ridge, North Atlantic Ocean

Solvin Zankl / Deep-sea hatchetfish {Argyropelecus olfersi} Atlantic ocean

Solvin Zankl / Juvenile deepsea Hatchetfish {Argyropelecus olfersi}, Atlantic ocean

Norbert Wu / Slender Hatchetfish (Argyropelecus affinis) cleared and stained to show bones (Red) and cartilage (Blue) deep sea

Norbert Wu / Slender Hatchetfish (Argyropelecus affinis) eyes look up, light plates on body counter illuminate creating no shadow, deep sea

Norbert Wu / Slender Hatchetfish (Argyropelecus affinis) cleared and stained to show bones (Red) and cartilage (Blue) deep sea

DOC WHITE / Lowcrest hatchetfish {Argyropelecus slandeni} - deep sea specimen

David Shale / Deepsea fish {Stomias boa} with lure, deep sea Atlantic ocean