Overview

Comprehensive Description

Biology

Occurs in rainforest areas (Ref. 6801).
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Distribution

Africa: Nigeria, Cameroon and Gabon (Ogowe). Reported from the Ouémé River, Benin (Ref. 28663).
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Range Description

This species is known from Benin to Gabon.

Central Africa: In Lower Guinea, Polycentropsis abbreviata is recorded from coastal areas of the Meme, Wouri Sanaga and Lokoundje basin in Cameroon, and the Komo and Ogowe basin in Gabon.

Western Africa: This species has been found in Southern Benin, from the eastern side of the Ouémé to the Cross including the lower course and the delta of the Niger River.
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West-central Africa.
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Physical Description

Size

Maximum size: 80 mm TL
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Max. size

8.0 cm TL (male/unsexed; (Ref. 6801))
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Ecology

Habitat

Environment

benthopelagic; freshwater; pH range: 6.0 - 6.5; dH range: 10
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Habitat and Ecology

Habitat and Ecology
A bentho-pelagic species occurring in rain forest areas. Has an accessory breathing organ so can tolerate low oxygen levels. It has a very large mouth and is a sit-and-wait predator. Polycentropsis abbreviata exhibits male parental care (Britz 1997). In captivity, 100-200 eggs (diameter 1.3-1.4 mm) are preferentially attached to the underside of floating leaves. After spawning the male builds a foam-nest below the leaf covering the eggs in air bubbles. Bubbles are produced by taking air into the mouth and releasing bubbles through the gill cover. Eggs hatch after 120 h (at 27°C). Larvae adhere to the nesting site with a multicellular attachment organ on top of their head. They are guarded by the male until they leave the nest around 24 h after hatching. Yolk sac is reabsorbed and larvae start to swim free on the second day after hatching.

Systems
  • 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
Lalèyè, P., Moelants, T. & Olaosebikan, B.D.

Reviewer/s
Snoeks, J., Tweddle, D., Getahun, A., Lalèyè, P., Paugy, D., Zaiss, R., Fishar, M.R.A & Brooks, E.

Contributor/s

Justification
This species has a wide distribution, with no known major widespread threats. It is therefore listed as Least Concern. It has also been assessed regionally as Least Concern for central Africa. In western Africa it is assessed as Near Threatened.
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Population

Population
No information available.

Population Trend
Unknown
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Threats

Least Concern (LC)
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Major Threats
Oil exploration and land degradation due to impacts of deforestation, urban and agricultural developments. Also potentially threatened by exploitation for the aquarium trade.
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Management

Conservation Actions

Conservation Actions
None known. More research is needed into this species population range and numbers and biology and ecology. Conservation measures should be addressed, including habitat conservation and restoration, and population trends should be monitored.
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Relevance to Humans and Ecosystems

Benefits

Importance

aquarium: commercial
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