Nansenia oblita

Nansenia oblita, also called the forgotten argentine (from the specific name oblita, "forgotten") or the Mediterranean large-eyed argentine, is a species of fish in the pencil smelt family (Microstomatidae).[2][3][4]

Nansenia oblita
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Argentiniformes
Family: Microstomatidae
Genus: Nansenia
Species:
N. oblita
Binomial name
Nansenia oblita
(Facciolà, 1887)
Synonyms[1]
  • Microstoma argenteum oblitum Facciolà, 1887
  • Microstoma oblitum Facciolà, 1887
  • Microstoma rissoanum Sarato, 1887

Description

Nansenia oblita is silvery in colour. Its length is maximum 18 cm (7.1 in). It has 10 or 11 dorsal soft rays, 9 or 10 anal soft rays, 28–30 gill rakers, 42–45 vertebrae, and 4 branchiostegal rays.[5] The proximal part of the adipose fin is unpigmented and its entire body is covered with guanine.[6] The base of the caudal and procurrent caudal-fin rays are pigmented.[7]

Habitat

Nansenia oblita is pelagic, living in the northwest and eastern Atlantic Ocean, western Mediterranean Sea and Adriatic Sea at depths of 300–500 m (980–1,640 ft). It is commonly found off Messina, Sicily.[8]

Behaviour

It spawns during winter in the Mediterranean, perhaps later in the Atlantic.[5] It lays spherical eggs of about 1.5 mm (0.059 in) diameter.[9] It feeds on zooplankton.[2]

References

  1. "WoRMS - World Register of Marine Species - Nansenia oblita (Facciolà, 1887)". www.marinespecies.org.
  2. "Mediterranean large-eyed argentine (Nansenia oblita) | adriaticnature". adriaticnature.com.
  3. "Collected Reprints". The Center. August 23, 1987 via Google Books.
  4. "Biology". A.F. Høst. August 23, 1918 via Google Books.
  5. "Marine Species Identification Portal : Forgotten argentine - Nansenia oblita". species-identification.org.
  6. "Nansenia oblita". www.fishbase.de.
  7. Nations, Food and Agriculture Organization of the United (August 1, 2020). Identification guide to the mesopelagic fishes of the central and south east Atlantic Ocean. Food & Agriculture Org. ISBN 9789251330944 via Google Books.
  8. "Stanford Ichthyological Bulletin". Division of Systematic Biology, Stanford University. August 23, 1956 via Google Books.
  9. Nations, Food and Agriculture Organization of the United (November 16, 2018). A guide to the eggs and larvae of 100 common Western Mediterranean Sea bony fish species. Food & Agriculture Org. ISBN 9789251098950 via Google Books.


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