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> Argentiniformes (Marine smelts) > Microstomatidae (Pencil smelts)
Etymology: tenuicauda: Named for its slender caudal peduncle.
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 - 328 m (Ref. 5123). Deep-water

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Southwest Atlantic: restricted to the area near the subtropical convergence, around 40°S. High Seas only.

Size / Gewicht / Alter

Maturity: L_m ? range ? - ? cm
Max length : 8.4 cm SL Männchen/unbestimmt; (Ref. 5123)

Kurzbeschreibung Bestimmungsschlüssel | Morphologie | Morphometrie

Rückenflossenweichstrahlen (insgesamt) : 10 - 11; Afterflossenweichstrahlen: 8 - 10; Wirbelzahl: 46. Branchiostegal rays 4. Predorsal length less than 49% SL. Slender caudal peduncle, least depth is less than 5.5.% of SL. Pyloric caeca 8 (Ref. 5123).

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

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Kawaguchi, K. and J.L. Butler, 1984. Fishes of the genus Nansenia (Microsomatidae) with descriptions of seven new species. Los Angeles County Mus. Contr. Sci. 352:1-22. (Ref. 5123)

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

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): 3.2 ±0.4 se; based on size and trophs of closest relatives

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Nansenia tenuicauda Kawaguchi & Butler, 1984