Rouleina attrita explained

Rouleina attrita, the softskin smooth-head or softskin slickhead, is a species of fish in the family Alepocephalidae.[1] [2]

Its specific name is from the Latin attrīta ("bruised, worn away"), presumably referring to the mutilated or decomposed state of the type specimens.[3]

Description

Rouleina attrita is black, measuring up to .[4] Its upper jaw reaches to behind the eye, and it has a lateral line of 43–48 photophores.[5] It has 43–46 vertebrae.[6] Its scales are deciduous and its skin contains small fluid-filled compartments.[7] Its eyes contain convexiclivate temporal foveae containing densely packed ganglia.[8]

Habitat

Rouleina attrita is engybenthic or bathypelagic, meaning that it swims near the seafloor, living at depths of . It has been recorded in all non-polar seas.[9] [10]

Behaviour

Its testes are ribbon-like, in convoluted folds but never in discrete lobes. Its eggs are large, up to in diameter.[11]

Notes and References

  1. Web site: Rouleina attrita. fishesofaustralia.net.au.
  2. Book: Sensory Processing in Aquatic Environments. Shaun P.. Collin. N. Justin. Marshall. April 8, 2008. Springer Science & Business Media. 9780387226286. Google Books.
  3. Web site: Order ALEPOCEPHALIFORMES (Slickheads). December 29, 2016.
  4. Book: Smiths' Sea Fishes. Margaret M.. Smith. Phillip C.. Heemstra. December 6, 2012. Springer Science & Business Media. 9783642828584. Google Books.
  5. Book: Nations, Food and Agriculture Organization of the United. Identification guide to the mesopelagic fishes of the central and south east Atlantic Ocean. August 1, 2020. Food & Agriculture Org.. 9789251330944. Google Books.
  6. Web site: Fishery Bulletin. October 9, 1978. National Marine Fisheries Service. Google Books.
  7. Book: Fishes of the Gulf of Mexico, Vol. 1: Myxiniformes to Gasterosteiformes. John. McEachran. Janice D.. Fechhelm. June 17, 2013. University of Texas Press. 9780292757059. Google Books.
  8. Book: Visual Ecology. Thomas W.. Cronin. Sönke. Johnsen. N. Justin. Marshall. Eric J.. Warrant. August 10, 2014. Princeton University Press. 9780691151847. Google Books.
  9. Web site: Sport Fishery Abstracts. October 9, 1978. Department of the Interior, U.S. Fish and Wildlife Service. Google Books.
  10. Web site: Rouleina attrita, Softskin smooth-head. www.fishbase.se.
  11. Web site: Marine Species Identification Portal : Softskin smooth-head - Rouleina attrita. species-identification.org.

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