Mediterranean fish under threat from gruesome 'Alien' parasite which eats their tongues then lives in their mouths

A gruesome ‘Alien-like’ parasite which eats the tongues of bream and then 'replaces' them in its victims mouths is spreading in the Mediterranean. Almost half the fish in some areas are infected with the parasite, which swims in through the gills of young fish, then takes up position on top of the tongue, feeding on blood and growing. Researchers found that the 'cerathotoa italica' parasite - named 'Betty' by the scientists - is spreading fastest in heavily fished waters.

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