This study was conducted at the 4 landing beaches of the fishing units (Kilomoni, Kasenga, Mulongwe and Kalundu) at Lake Tanganyika in Uvira between March and May 2019. It provides information on the socio-economic aspects and the monthly evolution of traditional fishing catches. Overall, 100 fishermen were interviewed about their socio- professional characteristics and fishing activities. The results of this survey show that 45% of the fishermen surveyed are members of fishing associations, 60% of the interviewees were young fishermen whose age group varies between 20 and 35 years, 60% of the interviewees only fish without other activities related to this profession, 68% of the fishermen surveyed had a secondary level, 38% of the fishermen surveyed stated that they practice fishing for survival. For the monthly evolution of the total weight of catches, the species Stolothrissa tanganicae was more caught in May in Kilomoni beach with more than 8000 kg, followed by Limnothrissa miodon (6000 kg) in Kalundu beach in May and Lates stappersii has a small total number of weight (200 kg) in April in Mulongwe beach. The comparison of beaches ranked two by two according to the number of boats shows a significant difference between Kalundu-Kasenga (p=0.0007), Kalundu- Kilomoni (p=0.0001), Kalundu-Mulongwe (p=0.0001), Kasenga-Kilomoni (p=0.0028), Kilomoni-Mulongwe (p=0.0008) beaches.

Keywords : Beach, Variation, Stolothrissa Tanganicae, Limnothrissa Miodon, Lates Stappersii.