Tuesday, February 10, 2009

Why so many dead fish in Rochor River?

Why so many dead fish in Rochor River?
STOMPer Chan wonders why there were so many dead fish in Rochor River when he went there yesterday (Feb 10).

He said:

"Yesterday (Feb 8), I passed by the Rochor River and found many dead fish floating along the river.

"On weekends, many people go fishing there.

"Can the fish caught be eaten?"

Why so many dead fish in Rochor River?
Why so many dead fish in Rochor River?

Related Post: Dead fish clog this waterway near Toa Payoh flyover (29th January 2009)

I'm sure there is nothing that can stop people from consuming fish caught from Rochor River. It's more about whether the fish should be eaten in the first place; who knows what pollutants might have accumulated in the bodies of these fish.

Besides, I think the cleanliness of the water is a far greater concern. After all, the Rochor River drains into the Kallang Basin, which forms part of the Marina Reservoir.

My guess is that this mass death is a result of the hot and dry weather we've been experiencing lately, which would have led to a drop in the level of dissolved oxygen. In our concretised canals and rivers, the high temperatures and lack of oxygen would prove to be a lethal combination even for the hardy fish species commonly found in our urban waterways.

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