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Calculating Pike Weight

Calculating Pike Weight
In-Fisherman Contributor Steve Ryan with a Tobin Lake, Saskatchewan, pike that measured 48 inches, with a girth of 24 inches. Estimated weight—about 36 pounds.

In-Fisherman Contributor Jeff Matity suggests this formula for estimating the weight of pike and muskies, from known length and girth measurements. Called “The Crawford Method,” it was developed during Dr. Robert Crossman’s and Dr. John Casselmans’ research on muskie aging, often called “The Cleithrum Project.” Twelve hundred muskies from 6 to 60 pounds were used to arrive at the formula, which we find highly accurate. To calculate beyond what we have here, the formula is Weight = (Length x Girth) divided by 25, minus 10—where weight is in pounds and length and girth are in inches.


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