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Teleostei (teleosts) > Argentiniformes (Marine smelts) > Microstomatidae (Pencil smelts)
Etymology: tenera: Named for its soft body (tenera = soft).
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 Ecology

Marine; pelagic-oceanic. Subtropical; 56°N - 39°S

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Southeast Atlantic: Namibia (Ref. 27121) and South Africa (Ref. 26282).

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 11.2 cm SL male/unsexed; (Ref. 5123)

Short description Identification keys | Morphology | Morphometrics

Dorsal soft rays (total): 11 - 12; Anal soft rays: 8 - 9; Vertebrae: 42 - 43. Branchiostegal rays 4. Pyloric caeca 7-9 (Ref. 5123).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Heemstra, P.C., 1995. Additions and corrections for the 1995 impression. p. v-xv. In M.M. Smith and P.C. Heemstra (eds.) Revised Edition of Smiths' Sea Fishes. Springer-Verlag, Berlin. (Ref. 11228)

IUCN Red List Status (Ref. 130435: Version 2024-1)

Least Concern (LC) ; Date assessed: 11 July 2012

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

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Estimates based on models

Preferred temperature (Ref. 123201): 7.7 - 14.4, mean 10.2 °C (based on 36 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 (10 of 100).

Nutrients (Ref. 124155): Calcium = 47.1 [14.7, 143.2] mg/100g; Iron = 1.44 [0.56, 6.57] mg/100g; Protein = 3.38 [0.00, 7.17] %; Omega3 = 0.341 [0.152, 0.773] g/100g; Selenium = 31.1 [7.8, 88.0] μg/100g; VitaminA = 15.8 [5.2, 50.1] μg/100g; Zinc = 0.805 [0.417, 1.546] mg/100g (wet weight);

Nansenia tenera Kawaguchi & Butler, 1984