Fish worth about Tk 10 lakh of three enclosures owned by a fish trader were poisoned to death as a consequence to previous enmity at Damakair village in Sadar upazila last midnight. Barun Kanti Biswas, owner of Demonath fish project, at the same village incurred the loss when he found that a large number of dead fish were floating in water of his enclosures that night. He said to police it was a consequence of previous enmity by his rivals.