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Ichthyofaunal Diversity of Komo River, tributary of Alima River, Congo Brazzaille

Author Affiliations

  • 1Laboratory of Animal Biology and Ecology Research, Superior Normal School, University Marien Ngouabi, PoB 69 Brazzaville, Congo
  • 2Laboratory of Animal Biology and Ecology Research, Superior Normal School, University Marien Ngouabi, PoB 69 Brazzaville, Congo and Faculty of Sciences and Techniques, University Marien Ngouabi, PoB 69 Brazzaville, Congo
  • 3Laboratory of Animal Biology and Ecology Research, Superior Normal School, University Marien Ngouabi, PoB 69 Brazzaville, Congo and Faculty of Sciences and Techniques, University Marien Ngouabi, PoB 69 Brazzaville, Congo
  • 4Faculty of Sciences and Techniques, University Marien Ngouabi, PoB 69 Brazzaville, Congo

Int. Res. J. Environment Sci., Volume 5, Issue (9), Pages 1-9, September,22 (2016)

Abstract

The fish fauna of the right bank of Congo River was little known, but the investigations were currently underway. They aimed to take stock of the different streams of Congo Brazzaville. A study of the fish fauna of the Komo River was conducted in two stations using gill nets, and nets.86 species grouped in 44 genera, 20 families and 9 orders were identified. Osteoglossiformes was the most represented order with 31%. The Mormyridae was the most represented family with 26%of species. Xenomystus nigri was the most abundant species (13%) in station 1; the two most abundant species in station 2 were Phenacogrammus interruptus (34.8%) and Alestopetersius hilgendorphi (33.2%). The Shannon index was high in both stations, the settlement of the station 1 was balanced with a value of equitability greater than 0.8. On the contrary, equitability value was 0.6 in station 2, proof of an unbalanced population.

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