Aquaculture and Fisheries



  • Aquaculture has been in existence in the zone for the last 6 decades (Balarin, 1985). Despite this long history, a rich aquatic resource and high desire for aquaculture in the zone, the enterprise is still at a subsistence scale (KAZARDI, 2012). Therefore, this section aims at making informed decisions on existing natural water bodies, fish introductions, and on the management practices that can boost the productivity of fish in the SWHAEZ.

    Reference to earlier work

    Since the 1930s, studies of the fishery subsector in the SWHAEZ have focused on, limnology (Worthington & Ricardo., 1931 and Green., 1976), stock assessment (Kamanyi et al, 2006). The findings from the above studies indicate lower zooplankton standing crops and the fishery at a subsistence scale. Other previous initiatives, cage, pond fish culture and restocking programmes in the minor lakes were implemented. Despite these interventions, fish productivity has remained low probably due to poor adaptation, interactive effect between fish seed, feed and the aquatic environment. Therefore in this project, we envision at assessing the limnological parameters of the natural water bodies, evaluate the performance of fish species in diverse production systems and outline best management practices for optimum aquaculture productivity. In order to achieve this, the section implements one project: Development and promotion of fish species for enhanced productivity in diverse culture systems in SWHAEZ

    Project objectives

    To understand the limnology of the natural water bodies and how they interact with fish biodiversity in SWHAEZ

    To evaluate the performance of fish species; Mirror carp, Nile tilapia and African catfish in diverse culture systems in earthen ponds and cages

    To conduct a comparative economic analysis of cage and pond production systems in the zone.

    To promote the best performing fish species and production system in the zone

    Achievements

    Have completed the constructing/renovating one aquaculture research facility (6 ponds) at Kyanamira sub County Kabale District.

    We have evaluated the performance of fish species, Nile tilapia, Mirror carp and African catfish, mono-cultured in earthen ponds. Preliminary results indicate Nile tilapia as the best fish with better growth rates and cost-effective to culture in fertilized earthen ponds with supplementary feeding.

    We have completed a study on fish species composition and abundance in the natural water bodies in the zone. Preliminary results indicate Haplochromine fish species more abundant in all the lakes and Lake Kayumbu very productive with abundant Nile tilapia fish species of average body weight of 400g. Otters were a major challenge in the lakes.

    Backstopped one commercial fish farmer in Kihihi-Kanungu, and he is able to 14 tonnes fish last year 2013. Backstopping other two farmers on cages in Lakes Mulehe and Mutanda