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Synbranchiformes (Spiny eels) >
Mastacembelidae (Spiny eels)
Etymology: Mastacembelus: Greek, mastax, -agos = bite + Greek, emballo = to throw oneself (Ref. 45335); robertsi: Named for Tyson R. Roberts who collected part of the typematerial and who first suggested that this species might well be new to science (Ref. 28147).
Eponymy: Dr Tyson Royal Roberts (d: 1940) is an American naturalist and evolutionary biologist who has devoted most of his life to studying biodiversity, particularly that of fishes, throughout the tropics. [...] (Ref. 128868), visit book page.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
; sötvatten bentopelagisk. Tropical; 6°N - 7°S
Africa: lower Congo River and Pool Malebo in Democratic Republic of the Congo, and lower Kotto and Bomu rivers (Ubangui drainage, middle Congo River basin) in Central African Republic; also reported from Bangui fish market in Central African Republic (Ref. 28147).
Storlek / Vikt / Ålder
Könsmognad: Lm ?  range ? - ? cm
Max length : 33.8 cm SL hane/ej könsbestämd; (Ref. 84205)
Kort beskrivning
Bestämningsnycklar | Morfologi | Morfometri
Taggstrålar i ryggfenan (totalt) : 22 - 26; Mjukstrålar i ryggfenan (totalt) : 66 - 92; Taggstrålar i analfenan: 1 - 2; Mjukstrålar i analfenan: 63 - 92; Ryggkotor: 74 - 82. Can be distinguished from other African mastacembelid species by following combination of characters: small eyes, anterior border of first dorsal spine situated before, above, or just behind posterior edge of pectoral fin; generally the color pattern is uniform (Ref. 28147).
Body shape (shape guide): eel-like.
Collected mostly from the rapids. For specimens of the Lower Congo River basin (mainstream), water temperature was recorded at a range of 24.7-29.0°C, air temperature at 23.3-30.0°C, D.O. 8.0 mg/l, and pH 7.0-7.5 (Ref. 28147).
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
Vreven, E.J. and G.G. Teugels, 1996. Description of a new mastacembelid species (Synbranchiformes; Mastacembelidae) from the Zaïre River basin in Africa. Copeia 1996(1):130-139. (Ref. 28147)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
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Uppskattningar baserade på modeller
Index för fylogenetisk mångfald (Ref. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00269 (0.00127 - 0.00569), b=2.94 (2.76 - 3.12), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Trofisk nivå (Ref. 69278) |
3.8 ±0.6 se; based on size and trophs of closest relatives |
Resiliens (Ref. 120179) |
Mellan, lägsta populationsfördubblingstid 1,4-4,4 år (Preliminary K or Fecundity.). |
Sårbarhet i fisket (Ref. 59153) |
Moderate vulnerability (37 of 100). 🛈 |