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Table 3.

Changes in fish yield and catch structure in Brahmaputra in Assam, India during the 1970s and 1990s.

 1973–79 Average catch 1996–98 Average catch  
Group (kg d−1(kg d−1% Change 
Total 196.9  137.3  −30 
Major Carps 38.2 19.4 18.7 13.6 −30 
Minor Carps 27.8 14.1 9.6 7.0 −50 
Catfishes 46.8 23.8 19.5 14.2 −40 
Featherbacks 7.1 3.6 8.0 5.8 +61 
Hilsa 22.1 11.2 2.9 2.1 −81 
Prawn 9.8 5.0 2.9 2.1 −58 
Misc. and others 45.1 22.9 75.8 55.2 +141 
 1973–79 Average catch 1996–98 Average catch  
Group (kg d−1(kg d−1% Change 
Total 196.9  137.3  −30 
Major Carps 38.2 19.4 18.7 13.6 −30 
Minor Carps 27.8 14.1 9.6 7.0 −50 
Catfishes 46.8 23.8 19.5 14.2 −40 
Featherbacks 7.1 3.6 8.0 5.8 +61 
Hilsa 22.1 11.2 2.9 2.1 −81 
Prawn 9.8 5.0 2.9 2.1 −58 
Misc. and others 45.1 22.9 75.8 55.2 +141 
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