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> Argentiniformes (Marine smelts) > Microstomatidae (Pencil smelts)
Etymology: antarctica: Named for its region of occurrence.
Eponymy: Fridtjof Nansen (1861–1930) was a Norwegian explorer, scientist, diplomat and later recipient of the Nobel Peace Prize. [...] (Ref. 128868), visit book page.

Environment: milieu / climate zone / depth range / distribution range Ökologie

seewasser bathypelagisch; tiefenbereich 0 - 4145 m (Ref. 58018). Temperate

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Southern Ocean: circum-Antarctic in sub-Antarctic water.

Size / Gewicht / Alter

Maturity: L_m ? range ? - ? cm
Max length : 22.0 cm SL Männchen/unbestimmt; (Ref. 5001)

Kurzbeschreibung Bestimmungsschlüssel | Morphologie | Morphometrie

Rückenflossenweichstrahlen (insgesamt) : 9 - 10; Afterflossenweichstrahlen: 9 - 10; Wirbelzahl: 47 - 50. Branchiostegal rays 3. Pyloric caeca 7. Ratio of caudal peduncle length to depth is greater than 1.5 (Ref. 5123).

The largest specimen studied, 20.75 cm SL had matured ovaries with developing eggs (Ref. 5123).

Life cycle and mating behavior Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven

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Gon, O., 1990. Microstomatidae. p. 105-106. In O. Gon and P.C. Heemstra (eds.) Fishes of the Southern Ocean. J.L.B. Smith Institute of Ichthyology, Grahamstown, South Africa. 462 p. (Ref. 5001)

IUCN Rote Liste Status (Ref. 130435: Version 2024-1)

Nicht untersucht

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

Harmless

Nutzung durch Menschen

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Estimates based on models

Preferred temperature (Ref. 123201): 1.7 - 6.4, mean 2.8 °C (based on 679 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.3 ±0.4 se; based on size and trophs of closest relatives

Fishing Vulnerability (Ref. 59153): Low vulnerability (17 of 100).

Nansenia antarctica Kawaguchi & Butler, 1984