By Brian Clark Howard
PUBLISHED November 10, 2016
Some Thai environmentalists have suspected a recent spill from an ethanol plant could have poisoned the rays. Others believe they may have been poisoned by cyanide, possibly intended to kill other more desirable fish.
Freshwater rays are rarely targeted directly by fishermen because they are not considered good to eat. They are also so large and strong that they tend to break most fishing gear.
This is sad!!
But wait, cyanide fishing?? Read more here: https://www.scientificamerican.com/article/cyanide-fishing/