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Teleostei (teleosts) > Argentiniformes (Marine smelts) > Microstomatidae (Pencil smelts)
Etymology: longicauda: Named for its long and slender tail..

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; bathypelagic; depth range 400 - 1100 m (Ref. 58302). Deep-water

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Pacific and Atlantic.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 13.3 cm SL male/unsexed; (Ref. 5123)

Short description Identification keys | Morphology | Morphometrics

Dorsal soft rays (total): 10 - 11; Anal soft rays: 9 - 11; Vertebrae: 47 - 50. Branchiostegal rays 4. Slender caudal peduncle with the least depth of which is 4.3-5.6 % SL. Longer snout of 2.3-4.1 % SL (Ref. 5123).

Mesopelagic (Ref. 58302).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

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 Red List Status (Ref. 130435)

Data deficient (DD) ; Date assessed: 10 July 2014

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): 1.5 - 1.7, mean 1.6 °C (based on 15 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).

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Nansenia longicauda Kawaguchi & Butler, 1984