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Argyropelecus

Genus of deep sea hatchetfishes From Wikipedia, the free encyclopedia

Argyropelecus
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Argyropelecus is an oceanic ray-finned fish genus in the deep sea hatchetfish family Sternoptychidae. A collective name is "silver hatchetfishes", but this can also refer to a species of the freshwater hatchetfishes which are not particularly closely related to this. The large pupils of these marine hatchetfishes enable them to see dim objects in the deep sea, where light barely penetrates.

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Species

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There are currently seven recognized extant species in this genus:[1]

Fossil record

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Skeletal diagrams of †A. iranicus (top) and †A. zagrosensis (bottom)

Extinct Argyropelecus species include:[2]

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A. prisca, a fossil species from the Oligocene of Romania

The earliest unequivocal fossils of Argyropelecus date to the Bartonian stage of the Eocene.[2] Previous to their discovery, the Eocene fossil record was restricted to otoliths from Austria, although their assignment to this genus is now questioned.[3]

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References

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