An Ugly Monster

A freak, a most unusual pike,
Was caught at Jackson's Point by Mike.
This fish was ugly, huge and strong,
With head alone twelve inches long.
Its body equalled, so Mike said,
Just half its tail plus twice its head:
A third the monster's total length
Was tail, grotesque, but built for strength.
So now maybe you'd like to see
how long this curious fish would be.

(Hunter, J.A.H., (1960). More Fun with Figures.
New York: Dover Publishers, Inc.)