This work was carried out with the aim of analyzing the growth parameters of Hepsetus odoe (Bloch, 1794) caught in the Ebrié lagoon with a view to contributing to the conservation and sustainable management of this fish. A total of 220 fish from commercial artisanal fishing were sampled from July 2022 to June 2023 in sector IV of the Ebrié lagoon. Each specimen was weighed and measured to the nearest gram and millimeter respectively. The length-weight relationship and the condition factor were calculated. The data collected were processed on Excel and Statistica 7.1 software. The size of the individuals varies from 11.2 to 36 cm and the weight oscillates between 10.2 and 196 g. The size frequency distribution is unimodal ([17; 20 [cm). In general, growth is of the positive allometry type regardless of sex and size. It appears that the species is gaining weight faster than it is growing. In males and females the mean value of the condition factor K is 0.638 ± 0.02 and 0.700 ± 0.014 respectively. These individuals are not overweight in their biotope regardless of their sex and size.
The study of the reproduction of Sepia officinalis of the exclusive economic zone of Ivory Coast was made between July 2014 and December 2015 on a total of 756 specimens (399 females and 357 males), dorsal length of coat ranging between 10 and 29,5 cm. The monthly followed parameters of reproduction were the gonado-somatic ratio (RGS), the sex-ratio, the fecundity and the ovocyte diameter. The results obtained reveal that this species reproduces all the year with a strong rate of reproduction in cold season. The total sex-ratio in general shows a predominance of the females compared to the males (1:1,12; ?
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