Bluegill Length To Weight Conversion Chart

Bluegill Length To Weight Conversion Chart

Bluegill Length To Weight Conversion Chart

Several 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.


Bluegill
5 in0.09 lb
6 in0.16 lb
7 in0.27 lb
8 in0.42 lb
9 in0.62 lb
10 in0.88 lb
11 in1.21 lb
12 in1.61 lb
13 in2.10 lb

Get Your Fish On.

Plan your next fishing and boating adventure here.

Recommended for You

Fish Recipes

Blackened Fish Recipe

Tommy Thompson

Blackened fish ready to serve with a side of okra and cucumber-red onion salad. This recipe is...

Accessories

Costa Baffin Sunglasses Review

Chris Schneider - April 26, 2019

Made from 100% recycled fishing nets, the Costa Baffin's are a must-have for any serious...

Bass

Sensational New Softbaits for Bass

Steve Quinn - April 22, 2019

Steve Quinn talks new softbaits for bass from Berkley.

See More Recommendations

Popular Videos

New 4-Liter Dry Creek Gear Pouch from Simms

Outdoor Sportsman Group writer Lynn Burkhead gets new product details from Simms Fishing Product's John Frazier about the new waterproof 4-Liter Dry Creek Gear Pouch.

New Spinning Reel for Finesse Fishermen

As Pure Fishing's Andrew Upshaw explains, reel making giant Abu Garcia has done it again at ICAST 2019 with a new spinning reel geared towards finesse fishermen.

Berkley's New Terminal Tackle

OSG's Lynn Burkhead and Chad LaChance, host of World Fishing Network's Fishful Thinker television show, talk about Berkley's new innovative terminal tackle being introduced at ICAST 2019.

See more Popular Videos

Trending Stories

Walleye

Understanding Spring Walleye Migrations

Gord Pyzer - June 02, 2018

'Walleyes spawn in spring and understanding spring walleye migrations, whether you live north...

Bass

Largemouth Bass Length To Weight Conversion Chart

Dr. Rob Neumann - January 22, 2017

Check out this Largemouth Bass Length To Weight Conversion Chart, a simple and accurate...

Boats & Motors

2- Vs. 4-Cycle Outboard Motors

Dan Johnson - April 16, 2018

Now more than ever, understanding each category's strong suits is critical to choosing a...

See More Stories

More Panfish

Panfish

Solving Spring Panfish

Jim Edlund - March 19, 2018

As the world awakens from winter's slumber, all manner of life begins to bloom and the...

Panfish

Softbait Hacks for Hardwater Panfish

Cory Schmidt - February 27, 2019

Bites are one thing, but bites alone don't get it done.

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.

×