The study on the characteristics of growth and condition factor K of Clarias jaensis was made in the floodplain of Mbô in Cameroon according to site, season, sex and size class. To assess the structure and dynamics of the population of C. Jaensis, in order to reduce mismanagement of fishing, 230 fish caught by "hawk" type gill nets, hooks and baited traps were collected monthly in three sites (Menoua, Nkam and flooded ponds) among fishermen between November 2016 and September 2017. The measurements and weighings of the total and standard lengths, then the total weight and eviscerated weight of the specimens ranged from 12.00 to 52.00 cm and 10.50 to 47, 50 cm respectively; Between 9.99 to 1165.59 g and 8.65 to 1119, 80 g. Overall, this species has a positive allometry growth. However, it showed seasonal variations. Thus, in the dry season, it passes from positive allometry to negative allometry regardless of sex and state of maturity, then isometry growth in the Nkam River to allometry positive in Menoua and flooded ponds. Condition factor K varied between 1.05 and 1.17 regardless of the factor considered. However no significant differences were observed. In view of these results, C. Jaensis could be considered as potential candidate for aquaculture