The nutritional effect of two diets from local ingredients has been assessed in order to observe the survival and growth of larvae of Clarias gariepinus from artificial insemination. These two diets containing each one 40% of protein from animal (A) and vegetable (B) with 11.61 Kj.g-1 and 12.71 Kj.g-1 of energy respectively for diets A and B were used to feed the larvae during 21 days. The results showed that the food used from local products is acceptable for the growth of larvae from their first age. These two diets (A and B) show that there’s no significant difference. Note that the area where this study has been conducted does not present an obstacle to any farmer anxious to produce larvae of Clarias gariepinus.

This investigation aimed to test the response of female after injection of pituitary extracts collected from the male of Clarias gariepinus and the nutritional effect of two diets that one from animal proteins (diet A) and another from vegetable proteins (diet B) on survival and growth of larvae from the induced reproduction. During 21 days, the larvae were fed with these two diets containing 40% of protein, 11.61 Kj.g-1 and 12.71 Kj.g-1 of energy respectively for diets A and B in order to know the effects on survival and growth of juveniles. The findings showed that the induced reproduction used for this work is interesting as to the response of female to injection of the pituitary extracts (100%) and to hatching rate from aquatic plants used as support (hyacinths). Furthermore, the results showed that the food used from local products is acceptable for the growth of larvae from their first age. On the other hand it appears that there’s no significant difference between these two diets (A and B) although the diet A from animal proteins appears as the best compared to diet B from vegetable proteins.

This study aimed to identify fishermen and their fishing gears used, identify fished species and their maturity sizes. Data were collected in six sites of lake Tanganyika inclunding Kalundu, Mulongwe, Kilomoni, Makobola, Kirimba and Kasekezi. The sampling was conducted from April to June 2010. The fish samples were collected from commercial fishing.
1440 fishermen were recorded that 67% were married and more than 33% of fishermen are aged of 20 to 29 years. Fishermen use lift nets of 4 to 5 mm of mesh, gill nets of 8 mm of mesh, beach seine nets of 4 mm of mesh, mosquito nets of 1 mm of mesh and fishing lines of 100 m of length having 90 to 100 hooks. 167 lift nets, 97 gill nets, 44 beach seines, 184 fishing lines and 5 mosquito nets were recorded during the period of investigation. A total of 1208 specimens belonged to 3 commercial species were sexed and weighted. Their length was measured and their maturity size was determined. Stolothrissa tanganicae was highest abundant with 520 individuals followed by Limnothrissa miodon with 464 and Lates stappersii with 224. On 100% individuals caught of these three species; 42.09% were immature. The first maturity size of S. tanganicae, L. miodon and L. stappersii was respectively of 63.09 mm; 77.45mm and 247.92 mm of length.
The mean price of 1Kg for L. stappersii varied between 3.6 and 4 US$, while 1Kg for S. tanganicae and L. miodon cost 2.22 US$ and 1.66 US$ respectively.