Page 24 - 240 introduction to fisheries and aquaculture tecnologies-azam
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Introduction to Fisheries and Aquaculture Technologies
12. Culture of Genetically Improved Catfish (Hybrid magur, Clarias gariepinus
female x C. batrachus male)
01. Contact division/person/unit Freshwater Station, Bangladesh Fisheries Research
Institute, Mymensingh.
02. Location of application Small ponds, ditches, canals and small cement cisterns
of urban and rural areas all over the country.
03. Key characteristics of the a. Growth rate is very high.
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b. Attains 130 to 175 g in weight within three months.
c. The fish is attractive and tasty like local magur .
d. Feed requirement is less.
e. High market price.
f. Culture techniques are simple.
g. Fish is less susceptible to disease.
h. Result in higher production per unit area.
04. Production guidelines
Area of cistern 2 sq. meter.
Water depth 70 to 80 cm.
Stocking Weight - 15 g, Density @ 40 fish/sq. meter.
Feeding Artificial diet prepared with made of Fish meal 2%,
Flour 4.5%, Blood meal 22.5%, Vitamin 0.5%,
Sesame oiJcake 23%, Salt 1%, Rice bran 43.5%,
Soyabean oil I%, Oyster shell 2% is given @ 5%
body weight offish twice daily.
Cleaning and water change a. Unused feed and fish faces should be removed.
b. Water is changed weekly.
Harvesting After three months culture period. By this
time fish reach marketable size 130 to 175 g.
Production @ 4.5 to 5.0 kg/sq. meter.
05. Risk involvement and a. Proper water quality needs to be maintained to avoid
management in adopting the disease in fish.
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b. Vigil against theft and diseases.
06. Impact of environment Hybrid catfish can affect the fish biodiversity left
uncontrolled in wild.
07. Procedure of transfer This technology can be transferred through
a. Relevant public extensions agencies.
b. Organizing farmers training and demonstration with
NGO involvement.
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