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Overview

Comprehensive Description

Biology

Inhabits lakes and rivers (Ref. 4967).
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Distribution

Range Description

This species is endemic to eastern Africa. It is found in Kingani, Wami, Ruvu, Rufiji and Kilombero Rivers (Paugy 1984).
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Africa: coastal rivers of Tanzania (Kingani, Wami, Ruvu, Rufiji, Kilombero) (Ref. 5331).
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Southeastern Africa.
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Physical Description

Morphology

Dorsal spines (total): 0; Dorsal soft rays (total): 9 - 11; Analspines: 0; Analsoft rays: 22 - 27; Vertebrae: 42 - 44
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Size

Maximum size: 210 mm ---
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Max. size

21.0 cm SL (male/unsexed; (Ref. 4967))
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Diagnostic Description

Alestes stuhlmannii is fusiform with a terminal mouth and a snout that becomes more blunt in larger individuals (Ref. 79648). The dorsal fin is in the middle of the back, and the adipose fin is closer to the caudal than to the dorsal fin (Ref. 79648). The anal fin base is much longer than the dorsal fin base (Ref. 79648). The body is covered with large cycloid scales which extend onto the bases of the anal and caudal fins; there are no scales on the head and none on the supraoccipital crest (Ref. 79648). In preserved specimens, the flanks are usually darker dorsally than ventrally; a thin, dark line runs along the flank from the posterior edge of the opercle to the base of the caudal fin rays; it does not follow the lateral line and is not confined to a single scale row (Ref. 79648).
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
No information available.

Systems
  • Freshwater
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Environment

pelagic; 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
Hanssens, M. & Snoeks, J.

Reviewer/s
Snoeks, J. & Darwall, W.

Contributor/s

Justification
This species is widespread in major river basins in Tanzania with no major threats identified. It is therefore assessed as Least Concern.

History
  • 2006
    Least Concern
    (IUCN 2006)
  • 2006
    Least Concern
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Population

Population
No information available.

Population Trend
Unknown
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Threats

Major Threats
No information available.
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Least Concern (LC)
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Management

Conservation Actions

Conservation Actions
No information available.
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Wikipedia

Alestes stuhlmannii

Alestes stuhlmannii is a species of fish in the Alestidae family. It is endemic to the Ulanga River in Tanzania.[1][2]

References[edit source | edit]

  1. ^ RUBADA, 1981, Rufiji Basin Study Programme. Study of fisheries in the proposed Steiglers gorge reservoir and the Ulanga floodplain. Atkins land and water management, Cambridge, England.
  2. ^ Charlwood, J, D., and Utzinger, Jurg, 1997. Fishery Methods and Fish Diversity in the Ulanga River in South-Eastern Tanzania. Afr. J. Hydrobiol. Fish Vol, No 7, p. 55-64.


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