I am trying to calculate the weight of a fish that my brother CnR'ed the other day and I keep getting outrageously high numbers. I was wondering if some one could help me out with a good formula that would estimate the weight closely the fish was 35x25 inches.Thanks in advance.

try this one http://www.piscatorialpursuits.com/resourcecenter/weightcalculator.htm

Thanks for the tip. The problem with that calculator is it claims the fish weighed 28.23 pounds. Which after looking at the fish I would say is quite impossible. The fish wasn't that big.

Are you sure about your girth? Seems like a fatty to me. Salmon?

I agree with Neal on the girth thing... seems way out of proportion to the length of the fish. Typical girth: length ratio for an average salmon is 3: 5. If it's an accurate girth measurement, though, the weight number goes up considerably. Girth is everything when it comes to determining the weight of a fish!

And a third on the girth ...

Very disproportionate for the length of the fish, even if it was a fattie.

I think there may have been a goof along the way

I am rather sure that the measurments were acurate I am not positive since I was holding the fish and not doing the measuring, but I did see the number. And the fish was a fat one. Just to be safe I cut 3 inches off the girth and re-caluculated I still came up with a 20 plus pound fish. Is this possible for a fish of this length to weigh this much?

Kanektok Kid

That was one mighty big fish! I cried out,"Holy S**t" the first time I saw it on the salmon gallery. Still looking for my first 20+ silver, and its been thirty years!

I think BB's fish weight calculator using a divisor of 775 was pretty close at 29 pounds. It is not unusual for a fish that size to lose 2 pounds in blood loss and dehydration in just a few hours, let alone the day after.

The variations in weight when two different fish have the same girth has a lot to do with what the cross-section of the fish looks like, especially the bucks. If it's a barrel chested, tide fresh wide-body (more circular midsection), it will weigh a lot more than a darkening fish that has slabbed up with a tall ridge back and skinny from side to side (more elliptical midsection).

In any case, nice fish!

I guess I'm due!

Especially now that I've finally graduated from "egg" status on this board.