PANJIM, April 12 -- The ghosts of 2011 have returned to haunt Panjim's historic Mala Lake. Fifteen years after a devastating ecological collapse first shocked the capital; a massive and sudden die-off of aquatic life has once again turned the water body into a floating graveyard, exposing the fragile state of the city's urban conservation efforts.

A shocking incident reported on Saturday morning has triggered panic among residents and raised serious environmental concerns.

According to locals, large number of fish was found dead and floating on the surface of the lake. The incident came as a surprise, especially since the lake reportedly had healthy fish activity just a day earlier, with several residents enjoying fishing on Friday nigh...