The viperfish is a deep-sea fish known for its long, fang-like teeth and bioluminescent features. It typically inhabits depths of 200 to 2,000 meters in the ocean, where sunlight does not penetrate. Viperfish can grow up to 30 centimeters (about 12 inches) in length and are recognized for their unique ability to produce light through special organs. These fish are primarily carnivorous, feeding on smaller fish and crustaceans. Their large mouths and flexible bodies allow them to capture prey efficiently in the dark depths of the ocean. The viperfish's adaptations make it a fascinating example of life in extreme environments.