The links provided above are for the OLD story that Yetta mentioned that happened back in February. The date those stories aired was February 2nd, 2012. The above information is not correct.
Here is a link to the story from May 10th, 2012:
http://www.jamaicaobserver.com/news/...l-River---NEPA
The story only mentioned "several specimans", not the tons that was mentioned above. Here is the statement:
"NEPA received a report just after 10:00 am that several specimens of dead fish were seen floating down the river towards the sea and that fishermen in the area were collecting fish that appeared to be stunned."