Overview

Distribution

Range Description

Phenacogrammus major is known from the Dja (Sangha) basin, Central Congo River basin. It occurs in the Lower Guinea region, found in the Nyong, Ntem, and Sanaga River basins of Cameroon.
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Africa: Nyong, Ntem, Sanaga and Dja (Sangha) River basins in Cameroon (Ref. 80290). Also reported from Rio Muni (Ref. 5331).
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West-central Africa.
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Physical Description

Morphology

Anal spines: 0; Analsoft rays: 21 - 25
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Size

Max. size

9.5 cm SL (male/unsexed; (Ref. 80290))
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Diagnostic Description

Diagnosis: flanks with intense pigment band from a vertical through anal fin origin and extending caudad to posterior margin of median caudal fin rays; 24-26 scales in longitudinal series; adipose fin broad and rounded, its total length 3x or more its length at base (Ref. 80290). Description: body robust, greatest body depth 28-38% of SL and head length 26-29% of SL; mouth slightly superior, lower jaw prominent, its depth about 2x that of upper jaw; premaxilla with 2 teeth in outer row each bearing 3-5 cusps, 4 teeth in inner row each bearing 5-7 cusps; dentary with 4 teeth in outer row each bearing 4-6 cusps, a monocuspid inner dentary tooth present at symphysis posterior to outer row teeth; lateral line canal incomplete, 12-16 tubes, ultimate canal-bearing scale at vertical through middle of pelvic fin; adipose fin large, its posterior margin reaching beyond vertical through middle of caudal peduncle; anal fin with 3 unbranched and 18-22 branched rays (Ref. 80290). Coloration: flanks silvery, scales of dorsum often with pigment concentrated at their base; conspicuous dark band restricted to caudal peduncle and mostly ventral to lateral line, its anterior limit at vertical through anal fin origin and extending caudad to posterior margin of median caudal fin rays; adipose fin red in life, violet-red in males; tip of pelvic fins black; fins otherwise yellowish to dusky; humeral spot often present (Ref. 80290).
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
Phenacogrammus major is a benthopelagic species.

Systems
  • Freshwater
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Environment

benthopelagic; freshwater
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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
Although restricted to Cameroon, the species is widespread and without major threats, and is therefore 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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Relevance to Humans and Ecosystems

Benefits

Importance

fisheries:
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