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How to Estimate the Weight of a Fish

Fishing the Salmon River, Polaski, NY

Credit: Mary Jaeger

Here's how to estimate the weight of a fish.

  • Measure the fish from the tip of its nose to the tip of its tail.
  • Then measure its girth at the thickest portion of its midsection.

Weight of a fat-bodied fish
(bass, salmon)
(length x girth x girth)/800

Weight of a slender fish
(trout, northern pike)
(length x girth x girth)/900

If a fish is 20 inches long and has a 12–inch girth, its estimated weight is
(20 x 12 x 12)/900
2,880/900=3.2 pounds

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that's why they call it

By john f

that's why they call it fishing not catching.

Please help me with formula

By chinzete David

Please help me with formula to estimate robusta fish weight.

Thank you

Settle down boys, it's just a

By Mr Rooster

Settle down boys, it's just a fish!

I will tell you where I

By Tboner

I will tell you where I caught my fish. There is luck and skill to catching fish and there"s plenty for all. Don't be a smart ass.

This is the fixed version of

By steve spees

This is the fixed version of the 1st. Sorry could you delete the 1st?
You know how everybody always ask you where you caught it,and you really don't want to say.

I always say in the mouth or in the water,lol.


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