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Osteoglossiformes (Bony tongues) >
Mormyridae (Elephantfishes)
Etymology: Petrocephalus: Latin, petra = stone + Greek, kephale = head (Ref. 45335); degeni: Named after its collector, Mr. E. Degen (Ref. 1568, 91771).
Environment: milieu / climate zone / depth range / distribution range
Ecologie
; zoetwater demersaal. Tropical
Africa: Katonga River, Lake Victoria (Ref. 91771).
Size / Gewicht / Leeftijd
Maturity: Lm ?  range ? - ? cm
Max length : 8.1 cm SL mannelijk/geslacht niet bekend; (Ref. 91771)
Korte beschrijving
Morfologie | Morfometrie
Dorsale stekels (totaal): 0; Dorsale zachte stralen (totaal): 19; Anale stekels 0; Anale zachte stralen: 27. It is distinguished from its congeners in the short dorsal fin originating above the first ray of the anal (Ref. 1568). Preanal length 64.1% of standard length; snout very short, the distance from the tip of the snout to the centre of the eye is 25.8% of head length (Ref. 1568, 91771). Width of mouth about 25% of head length (Ref. 1568). Teeth biscuspid, 10 in upper jaw and 22 in lower jaw (Ref. 1568).
Forms shoals and frequents sandy or gravelly bottoms on lake shore; feeds on algae, plankton and small underwater insects (Ref. 36900).
Life cycle and mating behavior
Geslachtsrijpheid | Voortplanting | Kuitschieten | Eieren | Fecundity | Larven
Kramer, B., R. Bills, P. Skelton and M. Wink, 2012. A critical revision of the churchill snoutfish, genus Petrocephalus Marcusen, 1854 (Actinopterygii: Teleostei: Mormyridae), from southern and eastern Africa, with the recognition of Petrocephalus tanensis, and the description of five new species. Journal of Natural History 46(35-36):2179-2258. (Ref. 91771)
Status op de Rode Lijst van het IUCN (Ref. 125652)
Gevaarlijk voor mensen
Harmless
Gebruik door de mens
Visserij:
Meer informatie
Populaire namenSynoniemenMetabolismePredatorsEcotoxicologieVoortplantingGeslachtsrijpheidKuitschietenSpawning aggregationFecundityEierenOntwikkeling van de eieren
Leeftijd/GrootteGroeiLengte-gewicht parametersLengte-lengte parametersLengtefrequentiesMorfometrieMorfologieLarvenPopulatiedynamica van de larvenrecruteringAbundantieBRUVS
ReferentiesAquacultuurAquacultuurprofielKweeklijnenGeneticaAlleelfrequentiesErfelijkheidZiektenVerwerkingNutrientsMass conversion
Tools
Speciale rapporten
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Estimates based on models
Phylogenetic diversity index (Ref.
82805): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01585 (0.00688 - 0.03653), b=2.86 (2.68 - 3.04), in cm total length, based on LWR estimates for this Genus-BS (Ref.
93245).
Trophic level (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Weerstandsvermogen
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100) .
Climate Vulnerability (Ref.
125649): (0 of 100) .