deep sea quest | carrot fantasy deep sea 9 Deep Sea Fish Deep-sea fish are fish that reside in the darkness below the sunlit surface waters, that is below the epipelagic or photic region of the sea. The lanternfish is, by far, the most common deep-sea fish. Other deep ocean fishes include the flashlight fish, cookiecutter shark, bristlemouths, anglerfish, viperfish, and some species of eelpout. Only about 2% of regarded marine species inhabit the pelagic environment. This means that they will live in the water column as opposed to the benthic organisms that live in or on the sea floorboards.|1| Deep-sea microorganisms generally inhabit bathypelagic (1000-4000m deep) and abyssopelagic (4000-6000m deep) zones. However , qualities of deep-sea organisms, including bioluminescence can be seen in the mesopelagic (200-1000m deep) zone as well. The mesopelagic zone is the disphotic zone, meaning light there is minima...