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Argentiniformes (Marine smelts) >
Microstomatidae (Pencil smelts)
Etymology: pelagica: From its pelagic life.
Eponymy: Fridtjof Nansen (1861–1930) was a Norwegian explorer, scientist, diplomat and later recipient of the Nobel Peace Prize. [...] (Ref. 128868), visit book page.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
marina pelagic-oceanic; djupintervall 0 - 2000 m (Ref. 58302). Tropical; 15°N - 10°S
Southwest Atlantic, and western to eastern Central Pacific.
Storlek / Vikt / Ålder
Könsmognad: Lm ?  range ? - ? cm
Max length : 10.8 cm SL hane/ej könsbestämd; (Ref. 5123)
Kort beskrivning
Bestämningsnycklar | Morfologi | Morfometri
Mjukstrålar i ryggfenan (totalt) : 9 - 10; Mjukstrålar i analfenan: 8 - 9; Ryggkotor: 38 - 39. Branchiostegal rays 4. Head longer than N. atlantica, 27-30% SL. A dark pigment spot on the gular area that becomes obscure with growth in specimens larger than 9 cm SL (Ref. 5123).
Body shape (shape guide): elongated; Cross section: compressed.
Mesopelagic (Ref. 58302).
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
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)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Hot mot människor
Harmless
Mänskliga användningsområden
Verktyg
Särskilda rapporter
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Uppskattningar baserade på modeller
Index för fylogenetisk mångfald (Ref. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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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). |
Trofisk nivå (Ref. 69278) |
3.2 ±0.4 se; based on size and trophs of closest relatives |
Sårbarhet i fisket (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |