In which specific ocean zones does the viperfish typically reside?

Answer

Mesopelagic and bathypelagic zones

Viperfish are deep-sea creatures that occupy the twilight and dark regions of the ocean. The mesopelagic zone, often called the twilight zone, is where sunlight is severely diminished, and the bathypelagic zone, also known as the midnight zone, is where sunlight is entirely absent. These environments are essential for their survival, providing the deep-water habitat where these fish spend the majority of their lives.

In which specific ocean zones does the viperfish typically reside?
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