By Rory Mackie
Overview
 Aquaculture Industry Overview
 The African Sharp-tooth Catfish
 Options for Zimbabwe
 Mr Muramba
 Conclusion
Aquaculture: A Global Perspective
 What is Aquaculture?
 Aquaculture is the rearing of aquatic organisms in
captivity
 Give a man a fish and you feed him for a day, Teach a
man to fish and you feed him...... Only until the wild
stock lasts, Teach a man to grow fish and you feed him
for a lifetime (Aquaculture Innovations)
Aquaculture Growth
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1993 – 17.8 Million tons produced
2006- 51.62 Million tons
Average growth of 8% p.a.
Nigerian aquaculture produced 751 000 tonnes of fish of
which:
 80,000 tonnes were African Sharp tooth Catfish
 Doubles every 3 years
 Zimbabwean Aquaculture produced 3 to 4,000 tonnes,
Bream only (Lake Harvest)
 10,000 Tonnes of wild fish production (Kapenta)
 Figures: FAO 2009 and Aquaculture Zimbabwe Trust
Why Aquaculture?
 Dwindling wild fish catches
 Increased demand for fish
 Growing world population
 Increased expendable income
 Greater demand for healthy white meat
The African Sharptooth Catfish
(Clarias Gariepinus)
 Catfish, Muramba or Barble
Advantages
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The ULTIMATE aquaculture species
Air breather – Can obtain o2 from the atmosphere
Fast Growth - 6 Months to 1kg
High stocking density – Up to 750kg/m3 in RAS
Disease resistant – High tolerance to poor water
quality
High fecundity – 50,000 eggs/kg of female
High dress out percentages – Over 50%
Low labour demand, low water demand
Storage – Can survive out of water for several days
Options for Rural Zimbabweans
Earth Ponds
Advantages
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Cheap - Easy to build, minimal equipment required
Low level of expertise – Minimal management
Natural heating – Sun is for free
Low risk – As compared to other aquaculture systems
15 Tons per Hectare *
 150kg from a 10m x 10m pond (Bream 20 to 30kg’s)
 Feeding with a nutritional compete sinking pellet
 F.C.R of 1.8*
 Cost per Kg of Protein $1.44 (Cost of Feed 80c/Kg )
 Fish can be dried and stored
*Manual for the Commercial Pond Production of African Catfish in
Uganda USAID and Fisheries Investment for Sustainable Harvest
Mr Muramba
 Recirculating Air System
 Commercial production of Catfish fingerlings
 Commercial production of Catfish for sale as a food
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fish
15mx4m Insulated building
2 Labourers
1o Tonnes a month
100,000 Fingerlings a month
Conclusion
 Test Case
 Results from Zimbabwe
 Education
 Courses
 Training