The fish has a distinctive habit of catching its prey sideways
in the mouth, killing or immobilising it with its sharp teeth, and
then turning the prey lengthwise to swallow it. It eats mainly
fish, but on occasion water voles and ducklings have also been
known to fall prey to pike. Pike will aggressively strike at any
fish in the vicinity, even at other pike. Young pike have been
found dead from choking on a pike of a similar size. Northern pike
also feed on frogs, insects and leeches. It has often been
suggested that pike optimally forage on prey that are from 25 to
35% of their body length.
http://en.wikipedia.org/wiki/Northern_pike
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