'It uses its tongue to drill a hole'. IF YOU think Australia has some nasty invasive species, wait until you see this bloodsucking fish invading North America. Source 9bImage from Great Lakes Fishery via News.com.au.
I wouldn't like to be in water with those things latching on to me. I hope they don't swarm when feeding.
They mostly ignore people preferring cold blooded animals instead. Although there was a roman named Vedius Pollio who was infamous for keeping a pond of lampreys to put disobedient slaves in.
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