A fish at London Zoo underwent an operation to remove a growth from its tail.
The Prickly leatherjacket Chaetodermis penicilligerus named Prudence came from the zoo s aquarium and underwent an hour-long operation to remove a tumour from under her tail.
She was given general anaesthetic and kept wet throughout the operation. Laboratory tests later proved that the tumour was benign and Prudence was returned to the aquarium where people can now see she has recovered fully and the zoo says she is doing swimmingly.
Prickly leatherjackets can grow up to 31cm in length. They are filefish that originate from the Indo-West Pacific and take their name from the elongated dorsal fin which has a shape similar to a gun's trigger and the rough textured skin.