
© The Nation, Pakistan
Karachi - Another case of fish mortality, mainly consisting of grey mullets surfaced within Karachi Port extending between Bab Island and Chinna Creek.
This is the second such case in the month of August 2013, in which a huge quantity fish have died. This mortality was attributed to pollution brought in by rain water flowing through Sindh Industrial Trading Estate (SITE) and laden with toxic chemicals when entered Karachi Harbour. It is estimated that about 100 m. tons fish have died.
During the present event of mortality, small quantity of fishes have died and beached in patches along Clifton beach since day before yesterday. Tiger tooth croaker, John croaker, mullets, terapons, scat, sea breams and other small fishes inhabiting open coastal waters along Clifton were observed to have been affected.
The mortality is attributed to red tide, a phenomenon which occurred due to abrupt an immense growth of small sized plant which is found in the sea. The reason for inducing sudden increase in this toxic plant (collectively known as phytoplankton) is not well understood.
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