The BBC are running the story of the tongue louse recently found in Lewisham, and they're kind enough to quote me:
"Despite its feeding habits, the louse was described as being a "harmless natural phenomenon" by Councillor Andrew Brown, Lewisham's cabinet member for the environment."
Of course, my biology education ended at O-level, so what I actually said drew its authority from elsewhere (and I also have to admit to a slightly more squeemish initial reaction than the press release lets on).
My quote in full:
Councillor Andrew Brown, Cabinet Member for the Environment added: "The owner of the fish definitely did the right thing in bringing in the fish to Environmental Health. As it turned out, it was a harmless natural phenomenon. Having sought expert advise from the Horniman Museum we know that it's an exceptionally rare case and we're extremely unlikely to ever come across it again."
My thanks to Jim Brock at the Horniman who did the detective work on this and who says:
"I have not seen this species in all my 13 years at the museum so it's a remarkable find."
Update: Skuds thinks Tongue Louse would make a great name for a band; and who am I to disagree.