Proceedings of a Workshop on the Development ... - World Fish Center

THE AFRICAN CATFISH CLARIAS GARIEPINUS: A PERSPECTIVE ON ITS ROLE AND POTENTIAL IN EGYPTIAN AQUACULTURE 19Table 2: Sub-sector definitions, output (2005) and potential (most important areas shaded)Farming system/ Key features/ Species Estimatedcategory locations produced Productivity output (tonnes) Key constraintsExtensive/unfertilizedE1 Fisheries-based Fish seed Various species, Very low, Un-recorded Managementaquaculture introduced into also grass carp* unmeasuredopen water bodiesE2 Integrated Some carp seed Mainly common 8-40 17,000 t Seed;(Rice-fish) still stocked, carp, some kg/feddan possibly waterlittle data* tilapiaE3 Pond Traditional Tilapia, mullet, 200-1,000 68,400 t Water(extensive) stocked/self- African catfish kg/feddanseeded areas some carpsSemi-intensive/supplementary fedS1 Pond More developed, Tilapia and 1,500–4,000 273,500 t Water, cost-(semi-intensive) mainly tilapia some mullet kg/feddan efficient feeds,based, somequality seed,moving to I1marketsIntensive/mainly fedI1 Pond (intensive) More modern Tilapia 4,500–6,000 113,900 t Feed, water,smaller units, <strong>of</strong>ten kg/feddan markets alsobetter managedseed, diseaseHighly intensive/ completely fedH1 Integrated Developed in Tilapia 15-25 kg/m 3 2,250 t Water, disease,(intensive tank new agricultural also market,system) zones feed, seedH2 Cage culture – In January 2007 Tilapia and 10-30 kg/m 3 57,400 t Sites/waterNile branches and cage numbers silver carp access, markets,irrigation canals were 20% <strong>of</strong> (now main feed, disease,those in 2005 species) seedH3 Cage culture – Future potential Various higher 10-30 kg/m 3 NA Sites, seed, alsocoastal/marine value marine feed, diseasespeciesH4 Intensive Future potential Various higher 40-100 kg/m 3 NA Markets, energyrecycle system value species costs* Free distribution <strong>of</strong> various carp species at different times; this has influenced uptake and output; tilapia seed is alsosometimes used.1210Average catfish price (LE)Average Tilapia price (LE)Price (LE/Kg)864201996 1997 1998 1999 2000 2001 2002 2003 2004 2005YearFigure 4: Annual average sale price (LE/kg) for African catfish (Clarias gariepinus) and Nile tilapia(Oreochromis niloticus) during the period from 1996 to 2005