Genetically Distinct Fish-Eating Herring Found in Baltic

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New Baltic Sea herring species "slåttersill" discovered along Swedish coast that feeds on fish instead of floating organisms.

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DNA analysis confirms these larger Baltic Sea herring are genetically distinct from common herring populations.

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Two separate groups of fish-eating herring inhabit different regions - northern Gulf of Bothnia and southern Stockholm-Kalmar waters.

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Areas with high slåttersill presence show reduced stickleback populations in Baltic waters.

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Excessive stickleback numbers damage ecosystem by consuming fish eggs and promoting harmful algal growth.

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Research shows correlation between high slåttersill presence and reduced stickleback populations in Baltic waters.

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Declining slåttersill numbers potentially contribute to stickleback surge as both species compete for similar food sources.

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Local fishing communities' traditional knowledge proved crucial in identifying these unique herring populations.

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Scientists Jake Goodall and Serena Donadi's research reveals ecosystem interactions between these fish species in Baltic Sea.

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