Overview
Comprehensive Description
Biology
Occurs in rainforest areas (Ref. 6801).
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Thys van den Audenaerde, D.F.E. and J. Breine 1986 Nandidae. p. 342-343. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ISNB, Brussels; MRAC, Tervuren; and ORSTOM, Paris. Vol. 2. (Ref. 6801)
http://www.fishbase.org/references/FBRefSummary.php?id=6801&speccode=9916
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Distribution
Africa: Nigeria, Cameroon and Gabon (Ogowe). Reported from the Ouémé River, Benin (Ref. 28663).
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Thys van den Audenaerde, D.F.E. and J. Breine 1986 Nandidae. p. 342-343. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ISNB, Brussels; MRAC, Tervuren; and ORSTOM, Paris. Vol. 2. (Ref. 6801)
http://www.fishbase.org/references/FBRefSummary.php?id=6801&speccode=9916
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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.
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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Physical Description
Size
Max. size
8.0 cm TL (male/unsexed; (Ref. 6801))
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Thys van den Audenaerde, D.F.E. and J. Breine 1986 Nandidae. p. 342-343. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ISNB, Brussels; MRAC, Tervuren; and ORSTOM, Paris. Vol. 2. (Ref. 6801)
http://www.fishbase.org/references/FBRefSummary.php?id=6801&speccode=9916
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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
Systems
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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Trends
Population
Population
Population Trend
No information available.
Population Trend
Unknown
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Threats
Least Concern (LC)
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IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006.
http://www.fishbase.org/references/FBRefSummary.php?id=57073
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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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Robins, C.R., R.M. Bailey, C.E. Bond, J.R. Brooker, E.A. Lachner, R.N. Lea and W.B. Scott 1991 World fishes important to North Americans. Exclusive of species from the continental waters of the United States and Canada. Am. Fish. Soc. Spec. Publ. (21):243 p. (Ref. 4537)
http://www.fishbase.org/references/FBRefSummary.php?id=4537&speccode=1255
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