A BBC Living World broadcast on the most fearsome of freshwater predators.
The pike has a fearsome reputation as Britain's most successful freshwater river predator. Keen fisherman and retired freshwater biologist Mike Ladle will never forget the first time he landed a pike. He was trying to catch eels, and hauled up a pike instead. When he tried to release the hook from inside its mouth, he soon found out why fishermen treat pike with such respect: their mouths are lined with rows of backwardly pointing teeth. They even have teeth on their tongue, a tongue which is green in colour! So once a pike has trapped its prey in its mouth there is no escape from those rows of thorn-like teeth.