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Argentiniformes (Marine smelts) >
Microstomatidae (Pencil smelts)
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
Ekologi
marina bentopelagisk; djupintervall 0 - 865 m (Ref. 5123). Subtropical; 35°N - 7°S
Eastern Pacific: southern region of California Current south of 35°N.
Size / Vikt / Age
Maturity: Lm ? range ? - ? cm
Max length : 26.6 cm SL (female)
Short description
Bestämningsnycklar | Morfologi | Morfometri
Taggstrålar i ryggfenan (totalt) : 0; Mjukstrålar i ryggfenan (totalt) : 9 - 10; Taggstrålar i analfenan: 0; Mjukstrålar i analfenan: 8 - 9; Ryggkotor: 43 - 46. Branchiostegal rays 4. Predorsal length greater than 49% SL. Caudal peduncle length greater than 13% SL; depth less than 8% SL in specimens more than 3 cm (Ref. 5123).
Adults are found in continental slope regions. Oviparous, with planktonic eggs and larvae (Ref. 35612). Larvae and juveniles pelagic in the upper 200-m layer and more broadly distributed than adults (Ref. 5123).
Life cycle and mating behavior
Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver
Moser, H.G. and J.L. Butler, 1996. Microstomatidae: argentines and pencilfishes. p. 208-215. In H.G. Moser (ed.) The early stages of fishes in the California Current Region. California Cooperative Oceanic Fisheries Investigations (CalCOFI) Atlas No. 33. 1505 p. (Ref. 35612)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
Verktyg
Special reports
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Estimates based on models
Preferred temperature (Ref.
123201): 7.8 - 14.8, mean 11.4 °C (based on 35 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 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).
Trofisk nivå (Ref.
69278): 3.4 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (22 of 100).
