Batalagundu FISH worth Rs 12 lakh were found floating in a tank near Batalagundu in Dindigul district as the water was poisoned.Siruvankulam tank is situated near Thumbaipatti. Seven months ago, a group of 10 persons had taken the tank on lease and began rearing fish. On Thursday morning, the lessees had gone to the tank to fish and found the fish floating dead. The people of the area were told not to consume the fish. All the dead fish were buried near the tank. On a complaint by Murugan, one of the lessees, Batalagundu police have registered a case and are investigating.