Overview

Comprehensive Description

Biology

Occurs only in big rivers (Ref. 3203).
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General Description

From Boulenger 1909, pp. 124-125.

Depth of body 4 2/3 to 5 times in total length, length of head 2 2/5 to 2 1/2 times. Upper profile of head convex; snout produced into an extremely long, compressed tube, feebly curved downwards, its length, in the adult, 5 to 5½ times postocular part of head, and 20 times its least depth, which equals diameter of eye; latter 2/3 interorbital width; lower jaw with a compressed dermal appendage nearly as long as eye; teeth conical, 7 in upper jaw, 4 or 6 in lower. Dorsal 27-34, originating above 8th or 9th ray of anal, its length 1 2/3 to 1 3/4 times in its distance from head. Anal 29-37, equally distant from base of ventral and from base of caudal. Pectoral pointed, less than 1/2 length of head, almost twice as long as ventral, and extending almost to extremity of latter. Caudal scaled with obtusely pointed lobes. Caudal peduncle 3 times as long as deep, 1/3 to 1/2 length of head. 76-81 scales in lateral line, 15-18 / 24-25 transverse series on body, 16-19 / 15-18 in transverse series between dorsal and anal, 16 round caudal peduncle. Pale brownish above, whitish beneath.

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Distribution

Range Description

Campylomormyrus numenius is known from Pool Malebo (Stanley Pool) and from the Central Congo River basin. It is also known from Maniema, Ulindi River, This species is known from upper Congo River basin. Specimens of this species have been reported from the rapids below Pool Malebo in the main channel of the Lower Congo River.
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Africa: Congo River basin (Ref. 3203).
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Congo River basin, Africa.
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Physical Description

Morphology

Dorsal spines (total): 0; Dorsal soft rays (total): 31; Analspines: 0; Analsoft rays: 35
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Size

Maximum size: 650 mm TL
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Max. size

65.0 cm TL (male/unsexed; (Ref. 3203))
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to 610 mm TL

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Diagnostic Description

Distinguished from Campylomormyrus curvirostris, another very long-snouted species by having a feebly curved (versus strongly curved in C. curvirostris) snout, with its depth approx. 5% of its length (versus more than 8%), and a shorter caudal peduncle (3x as long as deep versus 4x). Lobes of caudal fin are obtusely pointed in C. numenius, while more distinctly pointed in C. curvirostris. (from Boulenger 1909.)

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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
Campylomormyrus numenius is a demersal species. IT occurs only in big rivers (Gosse 1984).

Systems
  • Freshwater
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Environment

demersal; freshwater
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Molecular Biology and Genetics

Molecular Biology

Barcode data: Campylomormyrus numenius

The following is a representative barcode sequence, the centroid of all available sequences for this species.


No available public DNA sequences.

Download FASTA File
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Statistics of barcoding coverage: Campylomormyrus numenius

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 1
Specimens with Barcodes: 1
Species With Barcodes: 1
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2010

Assessor/s
Moelants, T.

Reviewer/s
Brummett, R., Mbe Tawe, A.N., Dening Touokong, C., Reid, G.M., Snoeks, J. Staissny, M., Moelants, T., Mamonekene, V., Ndodet, B., Ifuta, S.N.B., Chilala, A., Monsembula, R., Ibala Zamba, A., Opoye Itoua, O., Pouomogne, V., Darwall, W. & Smith, K.

Contributor/s

Justification
The species is widespread or without major threats throughout the Central Africa assessment region and is assessed as Least Concern.
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Population

Population
No information available.

Population Trend
Unknown
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Threats

Major Threats
None known.
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Least Concern (LC)
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Management

Conservation Actions

Conservation Actions
None known.
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