On a sweltering Mumbai afternoon, fish seller Nayana Patil grabbed an unsold pomfret from her counter, noting the price per kilo had tripled in the last fortnight.

"Now who will buy it for 1,500 rupees ($19.79)?" she asked indignantly, holding the silver fish up by its tail.

As a few customers eyed the fish on display like exhibits in a museum, Patil blamed a sudden spike in Mumbai temperatures for a drop in fish-catch volumes, arguing she should be compensated for her falling income due to the erratic weather.