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Northern Snakehead
These hefty large-mouthed fish are big and chunky, weighing the same as a small dog or cat – and apparently easily able to eat one of the above! Native to both Koreas, China and Russia, these fish settle quickly into new areas and often disrupt existing ecosystems. This has resulted in the attractively patterned fish being declared highly invasive. They can grow up to one and a half metres long and will definitely give you a start should you come across one determinedly heading across your garden!
