The authorial reticence used in the narration of the story .

allows the narrator to exaggerate
makes the reader more likely to believe the story
holds the plot together
hides the symbolism

He had fished in the river since ten years and he was a good fisherman. he know where to found the slim sliver chilwa fish, a big beautiful mahseer and the long moustache singhara. he know where the river was deep but where it is shallow; he knew which baits to use - which fish like worms and which liked gram. edit the above