Choose the correct pairing of fish and its feeding zone from the choices given below.
A
Rohu- Bottom Zone
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B
Catla- Middle Zone
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C
Common carp- Bottom Zone
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D
Mrigal- Surface Zone
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Solution
The correct option is C Common carp- Bottom Zone
Catla and silver carp are surface feeders, rohu is a column feeder, grass carp is a macro-vegetation feeder, and mrigal and common carp are bottom feeders.
A proportion of 30-40% surface feeders (silver carp and Catla), 30-35% mid-water feeders (rohu and grass carp) and 30-40% bottom feeders (common carp and mrigal) are commonly adopted depending on the productivity of the pond.