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> Stomiiformes (Lightfishes and dragonfishes) > Gonostomatidae (Bristlemouths)
Eponymy: The Margrethe was a Danish research ship. (Ref. 128868), visit book page.

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

marino batipelagico; distribuzione batimetrica 100 - 1739 m (Ref. 58018). Deep-water; 33°N - 49°S, 98°W - 154°W

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

Eastern Atlantic: off Portugal south to Morocco including the Azores, Madeira and Canary Islands; off Cape Agulhas, South Africa (Ref. 3991). Western Atlantic: Southeastern Florida and Bermuda to Venezuela, including the Gulf of Mexico and the Caribbean Sea (Ref. 37039). Elsewhere, South Atlantic, tropical and subtropical Indo-Pacific.

Size / Peso / Age

Maturity: L_m ? range ? - ? cm
Max length : 8.3 cm SL maschio/sesso non determinato; (Ref. 4463)

Short description Chiavi di identificazione | Morfologia | Morfometria

Spine dorsali (totale) : 0; Raggi dorsali molli (totale) : 15 - 16; Spine anali: 0; Raggi anali molli: 21 - 26. Yellowish in color, darker dorsally, opercle silver, caudal base and peduncle dark brown (Ref. 3991). Pectoral and pelvic fins colorless (Ref. 3991). Dorsal adipose fin present.

Usually associated with continental and island slopes (Ref. 4769). Mesopelagic (Ref. 58302). Occurs at 100-300 m by day, 200-500 m by night (Ref. 4463). Feeds on crustaceans and small fishes (Ref. 4769). Photophore development complete by about 27 mm SL (Ref. 4769).

Life cycle and mating behavior Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve

Main reference Upload your references | Bibliografia | Coordinatore | Collaboratori

Quéro, J.-C., J.C. Njock and M.M. de la Hoz, 1990. Gonostomatidae. p. 283-292. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 1. (Ref. 4463)

IUCN Red List Status (Ref. 130435: Version 2024-1)

Data deficient (DD) ; Date assessed: 23 May 2013

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Pesca: di nessun interesse

FAO - Publication: search | FishSource |

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Estimates based on models

Preferred temperature (Ref. 123201): 5.7 - 14.7, mean 9.2 °C (based on 768 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01122 (0.00514 - 0.02450), b=3.04 (2.87 - 3.21), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.5 ±0.48 se; based on food items.

Resilienza (Ref. 120179): Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Preliminary K or Fecundity.).

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

Margrethia obtusirostra Jespersen & Tåning, 1919