Growth of African Catfish (Clarias gariepinus) in Illizi South-East Algeria

Ibrahim Elkhalil Behmene (Laboratory of Sciences and Technics of Animal Production (LSTAP), Abdelhamid Ibn Badis University, National road N 11, Kharouba, Mostaganem, 27000, Algeria Department of Marine Science and Aquaculture, Abdelhamid Ibn Badis University, National road N)
Benabdallah Bachir Bouiadjra (Laboratory of Sciences and Technics of Animal Production (LSTAP), Abdelhamid Ibn Badis University, National road N 11, Kharouba, Mostaganem, 27000, Algeria Department of Marine Science and Aquaculture, Abdelhamid Ibn Badis University, National road N)
Mohamed Daoudi (Laboratory of Sciences and Technics of Animal Production (LSTAP), Abdelhamid Ibn Badis University, National road N 11, Kharouba, Mostaganem, 27000, Algeria Department of Marine Science and Aquaculture, Abdelhamid Ibn Badis University, National road N)
Abdelkader Homrani (Department of Marine Science and Aquaculture, Abdelhamid Ibn Badis University, National road N 11, Kharouba, Mostaganem, 27000, Algeria)

Journal of Aquaculture and Fish Health
Vol. 10 No. 3 (2021): JAFH Vol. 10 No. 3 September 2021

These observations are intended to provide information on the growth of the African catfish (Clarias gariepinus) living in the Oued Takhamalte-Illizi South-East Algerian. The basic data are the frequencies of the fish sizes resulting from the experimental fisheries carried out in October 2019 in Oued Takhamalte South-East of Algeria. The ELEFAN I program incorporated into FiSAT II software was used. The Powell-Wetherall method provides an L∞ of the order of 53.84 cm and a Z/K of 3.254 with a correlation coefficient R = - 0.944. This asymptotic length is greater than the maximum observed value (Lmax = 50 cm) and the Taylor approximation (L max/0.95 = 52.63 cm). The corresponding K value (0.28/year) seems the most suitable for the growth of a species, for this we opted for the parameters obtained by the sub-program « area of equal responses» of the program ELEFAN I (L∞ = 53 cm and K = 0.28/year) for the continuation of our study. The reduced gap test proves that there is a significant difference between the observed slope (b = 2.41) and the theoretical slope (P = 3), which makes it possible to affirm that the height-weight relationship in both sexes of C. gariepinus shows minor allometry, meaning that the weight grows slower than the cube of length.