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Deep-sea fish are fish that live in the darkness below the sunlit surface waters, that is below the epipelagic or photic zone of the sea. The lanternfish is, by far, the most common deep-sea fish. Other deep-sea fishes include the flashlight fish , cookiecutter shark , bristlemouths , anglerfish , viperfish , and some species of eelpout .
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Ceratioidei, the deep-sea anglerfishes or pelagic anglerfishes, is a suborder of marine ray-finned fishes, one of four suborders in the order Lophiiformes, the anglerfishes. These fishes are found in tropical and temperate seas throughout the world. The deep-sea anglerfishes exhibit extreme sexual dimorphism. The males are many times smaller ...
Krøyer's deep sea angler fish was first formally described in 1845 by the Danish zoologist Henrik Nikolai Krøyer with its type locality given as Southern Greenland. [3] When he described Ceratias holboelli Krøyer also proposed a new monospecific genus for his new species, meaning that this species is the type species of the genus Ceratias by monotypy. [4]
The black seadevil family, Melanocetidae, was first proposed as a subfamily in 1878 by the American biologist Theodore Gill. [2] The only genus in the family is Melanocetus which was proposed as a monospecific genus in 1864 by the German-born British herpetologist and ichthyologist Albert Günther when he described the humpback anglerfish (M. johnsoni). [3]
The luminescence comes from symbiotic bacteria, which are thought to be acquired from seawater, [2] [3] that dwell in and around the sea. Some anglerfish are notable for extreme sexual dimorphism and sexual symbiosis of the small male with the much larger female, seen in the suborder Ceratioidei, the deep sea anglerfish.
Most deep-sea organisms have only a single visual pigment sensitive to the absorbance ranges of 470–490 nm. [14] This type of optical system is commonly found in the stomiidae family. However, three genera of dragonfish evolved the ability to produce both long-wave and short-wave bioluminescence. [15] In addition, deep-sea dragon fishes ...
Deep-sea lizardfish resemble shallow-water lizardfishes, as reflected in their common names. Adults reach over 70 cm in length, and have a slender, cylindrical body. Their lizard-like bony head is flattened, unlike in most fishes, and an enormous mouth is filled with multiple series of long, sharp and needle like teeth for piercing and trapping ...