Answer: It is necessary for the survival of fishes.
Step-by-step explanation:
The fish pond must consists of soil that have high water holding capacity. The soil with high water holding capacity will retain water in the dry conditions when the environment experience scarcity of water due to low frequency of rainfall. Thus even if the water quantity of the pond become shallow the fishes can absorb moisture from the soil. So, water holding capacity of the soil plays an important role in the life of fishes in the pond.