When Ashok visited his village,he observed that villagers were suffering from malnutrition. To curb malnutrition in the village,he suggested they select five or six fish species in a pond. This increased the fish yield from the pond. The villagers were surprised to see the results and asked him to help with the other two ponds in the village.
$(i)$ What name is given to this intensive fish farming?
$(ii)$ Write the basis on which the different fish species are selected.
$(iii)$ Ashok's initiative is worth praising. Give two reasons.

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(N/A) $(i)$ This intensive fish farming is known as $Composite$ $fish$ $culture$.
$(ii)$ The different fish species are selected based on their different food habits so that they do not compete for the same food source in the pond.
$(iii)$ Ashok's initiative is worth praising because:
$1$. It demonstrates scientific temper and awareness regarding food security.
$2$. It shows compassion and a spirit of social service by helping the villagers improve their nutritional status.

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