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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