Length-weight relationships and condition factor of 3 species fish from Lôkpôhô dam lake (Ferkessedougou, Côte d’Ivoire)

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Research Paper 03/07/2025
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Length-weight relationships and condition factor of 3 species fish from Lôkpôhô dam lake (Ferkessedougou, Côte d’Ivoire)

Koné Tiéhoua, Amon Yao Nicolas, Kouassi Koffi Dongo, N’Da Konan
Int. J. Biosci. 27(1), 29-35, July 2025.
Copyright Statement: Copyright 2025; The Author(s).
License: CC BY-NC 4.0

Abstract

The length-weight relationship and condition factor are important growth indicators in fish. They provide information on the status of existing fish stocks and their evolution in an aquatic ecosystem. Studies on the length-weight relationship and condition factor of Oreochromis niloticus, Brycinus nurse and Tilapia mariae were carried out from September 2021 to August 2022 on the Lôkpôhô dam lake in the department of Ferkessédougou (North of Côte d’Ivoire). Fish from artisanal and commercial fishing were collected monthly in collaboration with fishermen. A total of 1610 specimens were observed including 847 specimens of Oreochromis niloticus, 433 specimens of Brycinus nurse and 330 specimens of Tilapia mariae. The results of the length-weight relationship give an allometry coefficient of 2.7 for Oreochromis niloticus, 2.86 forn Brycinus nurse and 2.65 for Tilapia mariae. The condition factors determined for Oreochromis niloticus, Brycinus nurse and Tilapia mariae are 2.15 ± 0.29; 1.46 ± 0.18 and 2.01 ± 0.29, respectively. The length-weight relationship showed a negative allometric (b < 3) for all three species. Condition factors greater than 1 show that these three species adapt well to this habitat.

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