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> Saccopharyngiformes (Swallowers and gulpers) > Monognathidae (Onejaws)
Etymology: Monognathus: Greek, monos = one + Greek, gnathos = jaw (Ref. 45335); ozawai: Named for Takakazu Ozawa who allowed the authors to describe the only Japanese specimen of this rare genus..
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

Northwest Pacific: Only known from the type locality south of the Ryukyu Islands.

Size / Peso / Age

Maturity: L_m ? range ? - ? cm
Max length : 6.5 cm TL maschio/sesso non determinato; (Ref. 34506)

Short description Chiavi di identificazione | Morfologia | Morfometria

Raggi dorsali molli (totale) : 96; Raggi anali molli: 66. M. ozawai differs from the other species of the genus by the following combination of characters: head short, snout blunt and short, skull length 5.5% TL, rostral fang with dorsal profile slightly convex forming an almost straight line with frontal profile of skull, dorsal fin origin above myomere number 5, anal fin origin below dorsal fin ray number 40 and pectoral fin about 1% TL.

Pelagic, caught in an open ring trawl (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)

Data deficient (DD) ; Date assessed: 13 August 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

Informazioni ulteriori

Trophic ecology
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Ecology
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Life cycle
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Anatomy
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Physiology
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Genetics
Genetica
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Estimates based on models

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): 3.1 ±0.30 se; based on food items.

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

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Monognathus ozawai Bertelsen & Nielsen, 1987