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> Saccopharyngiformes (Swallowers and gulpers) > Monognathidae (Onejaws)
Etymology: Monognathus: Greek, monos = one + Greek, gnathos = jaw (Ref. 45335).
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

Indian Ocean.

Size / Peso / Age

Maturity: L_m ? range ? - ? cm
Max length : 11.2 cm TL maschio/sesso non determinato; (Ref. 34506)

Short description Chiavi di identificazione | Morfologia | Morfometria

Raggi dorsali molli (totale) : 88; Raggi anali molli: 68. M. rajui differs from all other species of the genus by the following combination of characters: head short, snout blunt, skull length 3.4% TL, rostral fang with dorsal profile slightly convex forming an almost straight line with frontal profile of skull, dorsal fin origin above myomere number 7, anal fin origin below dorsal fin ray number 22, and no subdermal, lateral melanophores (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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Anatomy
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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): 3.4 ±0.5 se; based on size and trophs of closest relatives

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

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Monognathus rajui Bertelsen & Nielsen, 1987