Gnathonemus petersii (Günther 1862)

Onglets principaux

EOL Text

Habitat:

small to large rivers

Licensehttp://creativecommons.org/licenses/by-nc-sa/3.0/
Rights holder/AuthorSullivan, John P., Sullivan, John P., Africhthy
Sourcehttp://mormyrids.lifedesks.org/pages/2063

Threats:

Major Threats

None known.
Licensehttp://creativecommons.org/licenses/by-nc-sa/3.0/
Rights holder/Author© International Union for Conservation of Nature and Natural Resources
Sourcehttp://www.iucnredlist.org/apps/redlist/details/181553

Occurs close to the bottom where it probes for food with the long snout. Territorial and usually aggressive towards members of its own species. This behavior has been shown to involve electric organ discharge (EOD) activity. Feeds mostly at night on worms and insects, probably aided by electrosensory inputs.

Licensehttp://creativecommons.org/licenses/by-nc/3.0/
Rights holder/AuthorDrina Sta. Iglesia, FishBase
SourceNo source database.

Least Concern (LC)

Licensehttp://creativecommons.org/licenses/by-nc/3.0/
Rights holder/AuthorSusan M. Luna, FishBase
Sourcehttp://www.fishbase.org/summary/SpeciesSummary.php?id=2085

Turbidity of the Skin (Freshwater fish). Parasitic infestations (protozoa, worms, etc.)

Licensehttp://creativecommons.org/licenses/by-nc/3.0/
Rights holder/AuthorAllan Palacio, FishBase
Sourcehttp://www.fishbase.org/Diseases/diseasesList.cfm?ID=2085&StockCode=2280

Conservation Actions:

Conservation Actions

None known. The taxonomy needs revision.
Licensehttp://creativecommons.org/licenses/by-nc-sa/3.0/
Rights holder/Author© International Union for Conservation of Nature and Natural Resources
Sourcehttp://www.iucnredlist.org/apps/redlist/details/181553

Sporozoa-infections, other. Parasitic infestations (protozoa, worms, etc.)

Licensehttp://creativecommons.org/licenses/by-nc/3.0/
Rights holder/AuthorAllan Palacio, FishBase
Sourcehttp://www.fishbase.org/Diseases/diseasesList.cfm?ID=2085&StockCode=2280

Importance:

fisheries: subsistence fisheries; aquarium: commercial

Licensehttp://creativecommons.org/licenses/by-nc/3.0/
Rights holder/AuthorSusan M. Luna, FishBase
Sourcehttp://www.fishbase.org/summary/SpeciesSummary.php?id=2085

Biology:

Occurs close to the bottom where it probes for food with the long snout. Territorial and usually aggressive towards members of its own species. This behavior has been shown to involve electric organ discharge (EOD) activity (Ref. 10011). Feeds mostly at night on worms and insects (Ref. 7020), probably aided by electro-sensory inputs (Ref. 10011). Electroreceptors are distributed over the entire head, the dorsal and ventral regions of the body, but absent from the side and the caudal peduncle where the electric organ is located (Ref. 10011). Sex-related EOD characteristics in this species has been demonstrated in the laboratory with freshly imported samples during the breeding season; such EOD dimorphism changed with time in captivity (Ref. 10764; 10766). Lead nitrate in water significantly increased EOD rate and selectively altered the EOD waveform of this species (Ref. 10469). Dubbed a `hearing specialist' having auditory abilities in the range of 100-2500 Hz, with `best frequencies' between 300 and 600 Hz (Ref. 10830). Aquarium keeping: in groups of 5 or more individuals; minimum aquarium size 150 cm; not recommended for home aquariums (Ref. 51539).

Licensehttp://creativecommons.org/licenses/by-nc/3.0/
Rights holder/AuthorSusan M. Luna, FishBase
Sourcehttp://www.fishbase.org/summary/SpeciesSummary.php?id=2085

Sporozoa-infection (Myxobolus sp.). Parasitic infestations (protozoa, worms, etc.)

Licensehttp://creativecommons.org/licenses/by-nc/3.0/
Rights holder/AuthorAllan Palacio, FishBase
Sourcehttp://www.fishbase.org/Diseases/diseasesList.cfm?ID=2085&StockCode=2280
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith