Perch Length To Weight Conversion Chart

Perch Length To Weight Conversion Chart

Perch Length To Weight Conversion ChartSeveral methods are available to estimate the weight of a fish. Some use length as well as girth measurements. Weight also can be estimated using only length measurements based on relationship between length and weight. Length-weight equations can be developed for specific waters, regions (e.g., states), or for a particular species.

Formulas containing length as well as girth are often most accurate for estimating weight, because the fatness or plumpness of the fish is accounted for. If only length is available, the most accurate weights often are estimated from length-weight relationships for specific waters or regions. For instance, in some waters fish might be relatively "skinny," and the weight estimate might be overinflated if based on a formula created from data on a water body where fish are "fat" or even "normal." That's why adding girth to the formula can help with accuracy. Formula's containing girth, however, also may not be as accurate as we'd like, because of inherent differences in the shape of fish and finding the right adjustment factor (or "shape" factor) to use in the formula. And it's important to measure girth carefully, and at the fish's fattest point, as girth estimates affect weight estimates powerfully.

One easy way to estimate fish weight is through the use of standard length-weight formulas. Species-specific formulas, called standard-weight equations, have been developed for dozens of fish species by fishery biologists to describe the standard growth form of a species as a whole. These relationships often are used to assess body condition (the relative weight or plumpness of a fish), which provides an index of a fish's well-being, such as whether there are forage shortages or surpluses, and can sometimes reflect fish growth rate.

These standard length-weight formulas are often developed using thousands of fish from hundreds of populations across the range of a species, so they describe the "general" growth form of that species. For instance, the equation for black crappie was developed using over 20,000 fish across a range of sizes from 175 populations across the geographic range of black crappie.


*An important thing to keep in mind is that these standard length-weight formulas describe fish in "above-average" condition. In fact, the weights in the tables represent the 75th-percentile in the samples for that particular length, and are not average weights. In other words, if you lined up 100 random bass of the same length in order of weight, and those bass were a good representation of the range of weights for that length, the weight provided in the table would be for the 75th heaviest fish. While it might have made more sense to use the median weight for these formulas, fishery biologists decided to go with the 75th percentile so that the standard weight at a given length was an above-average or "ideal" target to shoot for in terms of body condition. So, if your fish appears plump and healthy, the weights from the table should be relatively close. If your fish is skinny to average, it will weigh less, and if very plump and remarkably "fat" it will weigh more. Just make an adjustment. No formula is 100-percent accurate, but if you have only length and not girth, this should help get you in the ballpark. Your state fishery agency may have standard weight tables based on regional data posted on their website. These formulas use total length of the fish, measured from the tip of the snout to the tip of the tail fin when compressed.


Perch Length To Weight Conversion Chart


Perch Length To Weight Conversion Chart



Yellow Perch
80.26
90.38
100.53
110.72
120.95
131.24
141.57
151.96
162.42
172.94
183.54

Get Your Fish On.

Plan your next fishing and boating adventure here.

Recommended for You

These secrets will put more and bigger bass in your boat! Bass

Topwater Lure Secrets for Bass

Jim Edlund - April 26, 2018

These secrets will put more and bigger bass in your boat!

This recipe for Steelhead Trout Niçoise Salad is heart healthy, paleo- and gluten-free diet friendly. Fish Recipes

Steelhead Trout Niçoise Salad Recipe

This recipe for Steelhead Trout Niçoise Salad is heart healthy, paleo- and gluten-free...

Crankin' is almost a necessity for finding bass on the Great Lakes from summer through fall. Bass

Using Crankbaits For Smallmouth Bass

Matt Straw - January 31, 2016

Crankin' is almost a necessity for finding bass on the Great Lakes from summer through fall.

See More Recommendations

Popular Videos

Simms

Simms' Solarflex Ultra Cool Armor Hoody

John Frazier of Simms Fishing Products helps OSG's Lynn Burkhead understand the new features of the new Simms' Solarflex Ultra Cool Armor sun protection hoody.

Berkley

Berkley's Surge Shad

Major League Fishing pro Scott Suggs has relied on the Berkley Surge Shad lure concept for years, using similar designs to capture MLF titles and a $1 million dollar FLW Forrest Cup win. With new features in the Surge Shad, Suggs tells OSG's Lynn Burkhead that even he can find success out on the water!

Trailer Bass

Trailer Bass

Doug Stange introduces us to some terrific jig trailer lures for largemouth bass.

See more Popular Videos

Trending Stories


Spring is prime time for pike. The Prespawn and Postspawn periods offer excellent odds at catching Pike & Muskie

How To Catch Pike In Spring

Dan Johnson - April 26, 2016

Spring is prime time for pike. The Prespawn and Postspawn periods offer excellent odds at...

Catfish are simple creatures that can be caught using the best catfish rigs. Catching them is simply a matter of putting a good bait in the right in front of them. Catfish

The Best Catfish Rigs

In-Fisherman - January 11, 2018

Catfish are simple creatures that can be caught using the best catfish rigs. Catching them is...

It was an August evening and I was wading the flats in Brewster, MA with my cousin. Here you can Other Fish

Must-Have Striped Bass Tackle

Rick Bach - May 04, 2017

It was an August evening and I was wading the flats in Brewster, MA with my cousin. Here you...

See More Stories

More Panfish

Panfish opportunities are boundless during the Summer Period. Fish are active, moving and feeding Panfish

7 Summer Panfish Hotspots

Steve Ryan - May 18, 2018

Panfish opportunities are boundless during the Summer Period. Fish are active, moving and...

Balanced jigging lures for big panfish may be the least understood category of ice lures, yet they have remarkable traits. Panfish

Balance Lures for Big Panfish

Cory Schmidt - March 07, 2019

Balanced jigging lures for big panfish may be the least understood category of ice lures, yet...


Scooping out nests, laying eggs, warding off nest invaders, staring down or dodging toothy Panfish

Find Your Biggest Bluegills During Summer

Matt Straw - July 06, 2018

Scooping out nests, laying eggs, warding off nest invaders, staring down or dodging toothy

See More Panfish

GET THE MAGAZINE Subscribe & Save

Temporary Price Reduction

SUBSCRIBE NOW

Give a Gift   |   Subscriber Services

PREVIEW THIS MONTH'S ISSUE

GET THE NEWSLETTER Join the List and Never Miss a Thing.