Classificatie / Namen
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Osteoglossiformes (Bony tongues) >
Mormyridae (Elephantfishes)
Etymology: Cryptomyrus: Name from the Greek ‘kryptos’ for secret or hidden, referring to the rarity of these fishes in collections and the Greek ‘myros’ for a kind of fish, a suffix used in the names of many other mormyrid genera; ona: The specific epithet is a noun in apposition that honors Marc Ona Essangui, Gabonese environmental and civic activist, founder and executive director of the NGO Brainforest and recipient of the 2009 Goldman Environmental Prize, in appreciation for his efforts to protect Gabon's equatorial forests and wetlands (Ref. 113668).
Eponymy: Marc Ona Essangui is a Gabonese environmental and civic activist, founder and Executive Director of the NGO ‘Brainforest’ and recipient of the 2009 Goldman Environmental Prize. [...] (Ref. 128868), visit book page.
Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied
Ecologie
; zoet water benthopelagisch; pH range: 8.0 - 8.0. Tropical; 24°C - ? (Ref. 113668)
Africa: Nyanga River and Ngounié River in Gabon (Ref. 113668).
Grootte / Gewicht / Leeftijd
Maturiteit: Lm ?  range ? - ? cm
Max length : 10.8 cm SL mannelijk / geslacht onbekend; (Ref. 113668)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
Dorsale stekels (totaal) : 0; Dorsale zachte stralen (totaal) : 21; Anale stekels: 0; Anale zachte stralen: 24; Wervels: 41. Diagnosis: Cryptomyrus ona is readily differentiated from its sole congener, C. ogoouensis, by the following characteristics: having an anal-fin origin located only just in advance of the dorsal fin, first dorsal ray above anal-fin ray 3 vs. first dorsal-fin ray above anal-fin ray 7; a deep caudal peduncle, 6.0-6.8% of standard length vs. 5.1%; and lobes of caudal fin markedly shorter than caudal peduncle, vs. nearly as long as peduncle (Ref. 113668).
Body shape (shape guide): fusiform / normal; Cross section: compressed.
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Sullivan, J.P., S. Lavoué and C.D. Hopkins, 2016. Cryptomyrus: a new genus of Mormyridae (Teleostei, Osteoglossomorpha) with two new species from Gabon, West-Central Africa. ZooKeys 561:117-150. (Ref. 113668)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-2 (Global))
Gevaar voor de mens
Harmless
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Schattingen op basis van modellen
Fylogenetische diversiteitsindex (Ref. 82804) |
PD50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00562 (0.00248 - 0.01273), b=3.05 (2.85 - 3.25), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Trofisch niveau (Ref. 69278) |
3.1 ±0.3 se; based on size and trophs of closest relatives |
Weerstandsvermogen (Ref. 120179) |
Hoog, minimale populatieverdubbelingstijd minder dan 15 maanden (Preliminary K or Fecundity.). |
Kwetsbaarheid van de visserij (Ref. 59153) |
Low vulnerability (13 of 100). 🛈 |