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Gnathonemus longibarbis (Hilgendorf, 1888)

Longnose stonebasher
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Gnathonemus longibarbis
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Classification / Names Nombres comunes | Sinónimos | Catalog of Fishes(Género, Especie) | ITIS | CoL | WoRMS | Cloffa

> Osteoglossiformes (Bony tongues) > Mormyridae (Elephantfishes)
Etymology: Gnathonemus: Greek, gnathos = jaw + Greek, nema = filament (Ref. 45335).
More on author: Hilgendorf.

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

; agua dulce demersal; potamodromo (Ref. 10608); rango de profundidad 27 - 45 m (Ref. 9606). Tropical

Distribución Países | Áreas FAO | Ecosistemas | Ocurrencias, apariciones | Point map | Introducciones | Faunafri

Africa: Victoria Nile (Ref. 1880), Lake Kyoga (Ref. 4903), Lake Victoria basin (Ref. 34290), Middle Akagera River system (Ref. 46152), Malagarazi River (Ref. 54847, 98755), Lake Tanganyika (Ref. 45485).

Length at first maturity / Tamaño / Peso / Age

Maturity: Lm ?, range 10 - ? cm
Max length : 36.0 cm TL macho / no sexado; (Ref. 52331)

Biología     Glosario (por ej. epibenthic)

In Lake Kyoga abundant among or near water lilies (Ref. 49805) and in Lake Victoria it occurs in shallow, inshore waters over sandy and rocky shores (Ref. 4903, 97924), seasonally over muddy bottoms adjacent to papyrus swamps or deep water near rocky islands (Ref. 9606, 97924). Feeds on bottom and in marginal vegetation; insectivorous (chironomid larvae, Povilla, Odonata larvae), but arthropods, oligochaetes and fish eggs are also eaten (Ref. 12526). Uses sensitive pointed addition to chin for testing holes in mud, papyrus roots and between stones to locate underwater insects (Ref. 36900). Rotates body to almost vertical position, searches substrate and grabs prey into mouth; produces weak electric organ discharge for navigation and to warn off other organisms (Ref. 97924). Oviparous (Ref. 205). Breeds twice a year during the rainy seasons, and migrates up rivers to spawn (Ref. 10608).

Life cycle and mating behavior Maturities | Reproducción | Spawnings | Egg(s) | Fecundities | Larva

Main reference Upload your references | Referencias | Coordinador | Colaboradores

Gosse, J.-P., 1984. Mormyridae. p. 63-122. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ORSTOM, Paris and MRAC, Tervuren. Vol. 1. (Ref. 3203)

IUCN Red List Status (Ref. 130435)

  Least Concern (LC) ; Date assessed: 16 December 2015

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Pesquerías: sin interés
FAO - Publication: search | FishSource |

Más información

Trophic ecology
componentes alimenticios
Diet compositions
Food consumptions
Food rations
Despredadores
Ecology
Ecología
Population dynamics
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Length-weight rel.
Length-length rel.
Length-frequencies
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Reproducción
Maturities
Fecundities
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Egg(s)
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Larva
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Toxicities (LC50s)
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Fuentes de Internet

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: Género, Especie | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | Acuarios públicos | PubMed | Reef Life Survey | Socotra Atlas | Árbol de la vida | Wikipedia: Go, búsqueda | World Records Freshwater Fishing | Expediente Zoológico

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5625   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01318 (0.00612 - 0.02839), b=2.85 (2.67 - 3.03), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Nivel trófico (Ref. 69278):  3.2   ±0.3 se; based on size and trophs of closest relatives
Resiliencia (Ref. 120179):  Medio, población duplicada en un tiempo mínimo de 1.4-4.4 años (Fec = 502).
Fishing Vulnerability (Ref. 59153):  Low to moderate vulnerability (26 of 100).