Ethiopia’s Lake Tana is losing the fight to water hyacinth . Lake Tana is the largest lake in Ethiopia. It holds 50% of the country’s fresh water . It is also the source of the Blue Nile, which contributes up to 60% of the Nile’s water . Not only is the lake important as a water source for over 123 million people in the Nile Basin, it is also a source of food in the form of fish. But weeds are threatening this life-giving resource. The lake has been listed in the top 250 lake regions of Global Importance for Biodiversity . It has 28 species of fish, of which 21 are endemic . Commercially, the lake’s most important fishes include the large African barbs, Nile tilapia and African catfish. The annual commercial value of fish production at Lake Tana is about USD$ 1.1 million . The potential fish production of the lake is estimated to be 13 000 tons yearly . But its current fish produ...
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