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Rouleina attrita

Species of fish From Wikipedia, the free encyclopedia

Rouleina attrita, the softskin smooth-head or softskin slickhead, is a species of fish in the family Alepocephalidae.[3][4]

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Rouleina attrita
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Division: Teleostei
Order: Alepocephaliformes
Family: Alepocephalidae
Genus: Rouleina
Species:
R. attrita
Binomial name
Rouleina attrita
(Vaillant, 1888)
Synonyms[2]
  • Bathytroctes aequatoris Goode & Bean, 1896
  • Bathytroctes attritus Vaillant, 1888
  • Bathytroctes mollis Köhler, 1896
  • Caudania mollis Köhler, 1896
  • Rouleina attritus Vaillant, 1888
  • Rouleina mollis Köhler, 1896
  • Talismania mollis Köhler, 1896
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Its specific name is from the Latin attrīta ("bruised, worn away"), presumably referring to the mutilated or decomposed state of the type specimens.[5]

Description

Rouleina attrita is black, measuring up to 42 cm (17 in).[6] Its upper jaw reaches to behind the eye, and it has a lateral line of 43–48 photophores.[7] It has 43–46 vertebrae.[8] Its scales are deciduous and its skin contains small fluid-filled compartments.[9] Its eyes contain convexiclivate temporal foveae containing densely packed ganglia.[10]

Habitat

Rouleina attrita is engybenthic or bathypelagic, meaning that it swims near the seafloor, living at depths of 450–2,300 m (1,480–7,550 ft). It has been recorded in all non-polar seas.[11][12]

Behaviour

Its testes are ribbon-like, in convoluted folds but never in discrete lobes. Its eggs are large, up to 3.2 mm (0.13 in) in diameter.[13]

References

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