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Improvement in Food Resources — Science STD 9 — Question

Rajasthan BoardEnglish MediumSTD 9ScienceImprovement in Food Resources3 Marks
Question
What is the composite fish culture? Give its two advantages.
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Answer

In composite fish culture system a combination of five to six fishes is used in a single pond so that they do not compete for the food because of there different food habits. All the fishes depending on their food habits feed on different parts of the pond for. Example: Silver carp is a surface feeder it feed on the surface of the pond, Rohu is a column feeder it feed on the middle portion of the pond and Common carp is a bottom feeder it feed on the bottom portion of the pond.Advantages:
  1. Fishes do not compete for the food they feed on different parts of the water body.
  2. As five to six fishes are cultivated at the same time so it increases the fish yield.

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