Solvin Zankl / Deepsea Viperfish (Chauliodus sloani) specimen from the North Atlantic near the North West of Spain, at a depth of 560-580m.

Solvin Zankl / Viperfish (Chauliodus sloani) - deep sea specimen from Portugal

David Shale / Viper fish {Chauliodus sloani}, Mid-Atlantic Ridge, North Atlantic Ocean

Solvin Zankl / Juvenile Viperfish {Chauliodus sloani}, Atlantic ocean

Solvin Zankl / Deep Sea Viperfish {Chauliodus sloani} with chromatophores and bioluminescence, Atlantic ocean

David Shale / Viperfish {Chauliodus sloani} deepsea, from the Mid-Atlantic Ridge, 400-520m, during the day

David Shale / Viperfish {Chauliodus sloani} deepsea, from the Mid-Atlantic Ridge, 400-520m, during the day

David Shale / Viperfish {Chauliodus sloani} Atlantic

David Shale / Close-up of ventral photophores on body of Viperfish {Chauliodus sloani} Atlantic

Norbert Wu / Viperfish (Chauliodus sp) attacking Mysids, luring prey with photophores, deep sea

Norbert Wu / Viperfish (Chauliodus sloani) light organs in mouth and all along body, southeastern Pacific, deep sea

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