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> Saccopharyngiformes (Swallowers and gulpers) > Monognathidae (Onejaws)
Etymology: Monognathus: Greek, monos = one + Greek, gnathos = jaw (Ref. 45335); bertini: Named for Leon Bertin in recognition of his pioneer contributions to the systematics of this family..
More on authors: Bertelsen & Nielsen.

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

marino batipelagico. Deep-water

Distribuzione Stati | Aree FAO | Ecosystems | Presenze | Point map | Introduzioni | Faunafri

Northeast and Southeast Atlantic. Also known from the Southwest Pacific.

Size / Peso / Age

Maturity: L_m ? range ? - ? cm
Max length : 10.3 cm TL maschio/sesso non determinato; (Ref. 34506)

Short description Chiavi di identificazione | Morfologia | Morfometria

Raggi dorsali molli (totale) : 91 - 98; Raggi anali molli: 43 - 58. M. bertini differs from all other species of the genus by the great distance between anal fin origin and anus (13-19 myomeres). It is further distinguished by the following combination of characters: head short, snout relatively long, skull length 3.6-4.9% TL, rostral fang with dorsal profile slightly convex forming an almost straight line with frontal part of skull, dorsal fin origin above myomere number 5-7, pectoral fin 5.3-10.5% TL and no lateral, subdermal spots of pigmentation (Ref. 34506).

All specimens were caught in the water column far above the bottom (Ref. 34506).

Life cycle and mating behavior Maturities | Riproduzione | Spawnings | Egg(s) | Fecundities | Larve

Main reference Upload your references | Bibliografia | Coordinatore | Collaboratori

Bertelsen, E. and J.G. Nielsen, 1987. The deep sea eel family Monognathidae (Pisces, Anguilliformes). Steenstrupia, 13(4):141-198. (Ref. 34506)

IUCN Red List Status (Ref. 130435)

Least Concern (LC) ; Date assessed: 11 October 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

Informazioni ulteriori

Trophic ecology
Prede
Diet compositions
Food consumptions
Food rations
Predatori

Ecology
Ecologia

Population dynamics
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Length-weight rel.
Length-length rel.
Length-frequencies
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Life cycle
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Spawnings
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Egg(s)
Egg developments
Larve
Dinamica popolazioni larvali

Distribution
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Anatomy
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Cervelli
Otoliths

Physiology
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Visual pigment(s)
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Diseases / Parasites
Toxicities (LC50s)

Genetics
Genetica
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Human related
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Stamps, coins, misc.

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Estimates based on models

Preferred temperature (Ref. 123201): 2.2 - 2.6, mean 2.4 °C (based on 499 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00102 (0.00046 - 0.00225), b=3.06 (2.88 - 3.24), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.2 ±0.40 se; based on food items.

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

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Monognathus bertini Bertelsen & Nielsen, 1987