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Fishermen in Mwanza, Tanzania are cashing in on the sale of Nile perch swim bladder.

Fish maw, which was once regarded as a waste by-product in East Africa, is slowly becoming a multi-million dollar export, thanks to the growing appetite in Asia.Uganda, Kenya and Tanzania collectively earn some $86 million per annum from Nile perch maw, which has become a highly sought-after commodity in China, Japan and other Asian countries

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9 minutes