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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.
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
marino benthopelagico; distribuzione batimetrica 0 - 865 m (Ref. 5123). Subtropical; 35°N - 7°S
Eastern Pacific: southern region of California Current south of 35°N.
Dimensione / Peso / Età
Maturità: Lm ?  range ? - ? cm
Max length : 26.6 cm SL (female)
Breve descrizione
Chiavi di identificazione | Morfologia | Morfometria
Spine dorsali (totale) : 0; Raggi dorsali molli (totale) : 9 - 10; Spine anali: 0; Raggi anali molli: 8 - 9; Vertebre: 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).
Body shape (shape guide): elongated.
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).
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
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)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Strumenti
Rapporti speciali
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Fonti Internet
Stime basate su modelli
Temperatura preferita (Fonte Biblio.
123201): 7.8 - 14.8, mean 11.4 °C (based on 35 cells).
Indice di diversità filogenetica (Fonte Biblio.
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).
Livello trofico (Fonte Biblio.
69278): 3.4 ±0.4 se; based on size and trophs of closest relatives
Vulnerabilità della pesca (Ref.
59153): Low vulnerability (22 of 100).
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