Formula to approximate fish weight

[UNREEL]

Thought I would post this for all to see. It works as an estimate on most fish.

length x girth squared divided by 800 = approximate weight

example....new N.C. blackfin tuna state record

length....38 inches
girth......29 inches

38 x 841=31958 divided by 800 = 39.9475

The new state record weighed 40 pounds even. Pretty damn close.



Dave

[HoosOnDeck]

is this formula as accurate on other species? or mainly tuna?

i see you stated "most fish" just wanted a quick clarification

thanks

[frankypettolina]

Remember on bills that it is lower jaw fork length.

It works ok. The girth measurement needs to be accurate.

In my experience long skinny fish, and short fat fish mess it up.

[TROPHY SPORTFISHING]

As Franky said accurate on most fish accept long skinny fish will throw it off bad. Was pretty close on a blue one we killed a few years ago weighed 534.5 chart was 540.77 lbs.

length 109 inches
girth 63 inches
109 x 3969 =432621 divided by 800 =540.77625

[UNREEL]

Most fish, I was thinking about Flounder???????

I think this is mostly for tuna and marlin. Its not an exact science, but good to know.


Dave