A note on the occurrence of large scale fish mortality along the Chaliyar River near Beypore

An unusual phenomenon of large scale fish mortality was noticed at Chaliyar river in Beypore on the morning of 3rd May 1966. The fishermen noticed hundreds of fish struggling and coming up on the surface of water in a dazed and dead condition and showing signs of suffocation. They caught the dead and dying fish and sold them immediately in the market. No adverse effect as a result of eating these fish was noticed