This work attempts to reconstruct historical fisheries profile by filling in the missed underestimated catch information for some reasons of industrial fishing, artisanal fishing, inland fishing, illegal fishing, discards and aquaculture production of Cameroon from 1950 to 2016.This reconstruction was carried out based on data published by various authors, the Ministry of Fisheries and Livestock (MINEPIA), the Limbe Research Center on Fisheries and Oceans and FAO reports. The dataset allowed us to reconstruct the fishing profile of Cameroon by completing the missing data by interpolation. Then we compare the data obtained with those of FAO. Reconstructed catches were estimated at 13,834 tons and aquaculture production was estimated at 19 tons in 1950 compared to 12,000 tons and 14 tons published by FAO, With the agricultural reforms and development of projects focused on the primary industry, catches increased around 94,122 tons in 1977(compared to 70,167 tons reported by the FAO) to 102,975 tons in 1981(compared to 79,761 tons reported by the FAO), declined to 78,790 tons in 1986 because of the reduction of the Exclusive Economic Zone of Cameroon (EEZ) by the geographical presence of the insular part of Equatorial Guinea (Malabo Island), then increased to 186,204 tons in 2005(compared to 142,345 tons reported by the FAO), declined to 154,800 tons in 2008(compared to 129,000 tons reported by the FAO). Since 2011 it became stable and reached around 240,000 tons against 220,000 tons published by FAO. Overall, there are discrepancies between the reconstructed data and the data provided to FAO: the reconstructed data is 30% higher than the FAO data. This information about fisheries production in Cameroonian waters shows that many locals, fisheries managers and stakeholders depends on fish products for either incomes or food safety; therefore, the recent decline of fish production in Cameroon is of no good sign to the abovementioned persons. These observed fish production decline indirectly threatens the food security of the people of Cameroon and low financial income to the state coffers.

A study on the effect of the substitution of fishmeal by Lima bean flour was conducted between March and May 2018 within the AIO ICG of the Batié District, with the global objective of contributing to the development of alternative sources of animal protein. Specifically, the aim of the study was to evaluate the effect of the substitution of fishmeal by Lima bean flour on the growth performance, survival and feed cost of Clarias gariepinus. For this purpose, 300 fry of Clarias gariepinus with an average weight of 3 ± 1.41g were divided into five batches and fed three times a day with rations corresponding to 5% of their ichthyo biomass. The rations R0, R25 R50, R75 and R100 respectively corresponded to the substitution rates of 0, 25, 50, 75 and 100% of fish meal by that of Lima bean. The physic-chemical characteristics of the water (pH, temperature, dissolved oxygen, nitrites and nitrates) were measured daily. The following results were obtained: The highest weight gains were obtained with the rations R25 (20.56 ± 0.40 g), R50 (20.64 ± 0.32 g), R75 (20.98 ± 0.46 g) and the lowest with the ration R100 (16.21 ± 0.28 g). For this average daily gain, the highest values were 0.36 ± 0.02 g; 0.37 ± 0.01 g, 0.38 ± 0.01 g respectively for the R0, R50 and R75 rations and the lowest with R100 (0.29 ± 0.01 g). The highest value of the specific growth rate (2.47 ± 0.07%) was obtained with the ration R0 and the lowest (1.61%) with the ration R100. The consumption index reached its highest and lowest values with the rations R100 (4.74 ± 0.42) and R50 (3.57 ± 0.43) respectively, compared to the value of the ration R0 (3.31 ± 0.37) for this parameter. Concerning the condition factor K, the highest value was recorded with the R50 diet (1.11 ± 0.49) while the lowest value was obtained with the R75 diet (0.95 ± 0.45). The cost of producing one kilogram of food was higher with the R25 ration (504.59 FCFA) and lower with the R100 ration (443.20 FCFA). This study found that incorporating 75% Lima bean flour into the feed increases the growth performance of Clarias gariepinus fry and reduces the cost of food production.