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; superorder Scopelomorpha, order Myctophiformes)

A large family of marine, mainly deep-water, fish, that have a slender and compressed body, a single dorsal and adipose fin, and a distinct anal fin. The mouth and eyes are large. Generally small fish, they are probably the most abundant deep-sea fish, occurring in schools at depths exceeding 500 m during the day, but sometimes found near the surface at night. They have rows of photophores along the lower part of the body. There are about 220 species, found world-wide.

Subjects: Zoology and Animal Sciences.

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