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Labeo nunensis
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drawing shows typical species in Cyprinidae.
Teleostei (teleosts) >
Cypriniformes
(Carps) >
Cyprinidae
(Minnows or carps) > Labeoninae
Etymology:
Labeo:
Latin, labeo = one who has large lips (Ref.
45335
)
;
nunensis:
Named after the River Noun where the type material was collected (Ref. 26190). Considered a synonym of
Labeo parvus
(Ref.
2801
)
.
More on author:
Pellegrin
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic. Tropical; 10°N - 15°S
Africa: Lower Guinea endemic, found in north-western Cameroon in following rivers: Noun, Djerem, Sanaga, Kelle, Mape, Assamba, Mbam, Mekay, Meng, Nchi, Nkoup, Mvi, Mevobo , tributary of Kim and northern Mifi (Ref.
81639
). Records of
Labeo chariensis
from Cameroon may in fact refer to
Labeo nunensis
.
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 29.1 cm SL male/unsexed; (Ref.
26190
)
Short description
Morphology
|
Morphometrics
Dorsal
soft rays
(total): 11-12;
Anal
soft rays
: 8;
Vertebrae
: 32 - 34. Diagnosis: snout very prominent and with a more or less deep transverse furrow and numerous tubercles; some specimens additionally have numerous small, wart-like tubercles dorsally on head; small fleshy appendage at anterior end of snout; interocular profile flattened; scale formula: 38-40 (39 commonly observed); 4.5-6.5 (5.5 commonly observed, exceptionally 4.5); 3.0-4.5 (4.0 commonly observed); 16-19 (16 commonly observed); dorsal fin with 11-12 (11 commonly observed) branched rays; upper edge of dorsal fin falciform (or deeply concave); 33-34 (33 commonly observed) vertebrae; ventral fin origin located under the 4th branched dorsal ray; genital orifice situated distant from anal fin origin; sometimes a dark brown longitudinal band is present (Ref.
81639
).
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
Reid, G.M.
, 1985. A revision of African species of
Labeo
(Pisces: Cyprinidae) and a re-definition of the genus. Verlag von J. Cramer, Braunschweig. 322 p. (Ref.
1440
)
IUCN Red List Status (Ref.
130435
)
Least Concern (LC)
; Date assessed:
16 February 2009
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
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Zoological Record
Estimates based on models
Phylogenetic diversity index (Ref.
82804
): PD
50
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245
).
Resilience (Ref.
120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153
): Low to moderate vulnerability (26 of 100).
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Page last modified by :
mrius-barile
- 20 July 2016
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