Bug Eats and Replaces Snapper's Tongue

A gross creature which gobbles up a fish's tongue and then replaces it with its own body has been found in Britain for the first time.
The bug - which has the scientific name cymothoa exigua - was discovered inside the mouth of a red snapper bought from a London fishmonger.
The 3.5cm creature had grabbed onto the fish's tongue and slowly ate away at it until only a stub was left. It then latched onto the stub and became the fish's "replacement tongue".
Looks like we better check out fishies before we eat curry fish head!
Cymothoa exigua, a crustacean, is the only known parasite that effectively replaces a body organ. It makes its home in the mouth of a fish, where it drains blood from the tongue until it withers and dies. It attaches itself to the remaining stub and the fish is actually able to utilize it as a replacement tongue to draw in and manipulate food, which the parasite shares.