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Conference wahoo::fishing-v2

Title:Fishing-V2: All About Angling
Notice:Time to go fishin'! dayegins
Moderator:WAHOO::LEVESQUE
Created:Fri Jul 19 1991
Last Modified:Wed Jun 04 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:548
Total number of notes:9621

53.0. "How to determine fish weight by length." by SOLVIT::PAPPAS () Wed Sep 04 1991 09:31

    
    
    A recent article in the August issue of outdoor life has taken a swag
    at estimating the weight of smallmouth and largemouth bass to length.
    Here is a rundown of their findings from a sample size of 4,000 bass
    caught over a wide geographical area of the states.
    
    Smallmouths				LargeMouths
    
    Length	Weight			Length		Weight
    12"		13oz			12		15oz
    13		1pd 1oz			13		1pd 3oz
    14		1pd 5oz			14		1pd 8oz
    15		1pd 10oz		15		1pd 14oz
    16		1pd 15oz		16		2pd 4oz
    17		2pd 6oz			17		2pd 12oz
    18		2pd 13oz		18		3pd 4oz
    19		3pd 5oz			19		3pd 14oz
    20		3pd 13oz		20		4pd 8oz
    21		4pd 7oz			21		5pd 4oz
    22		5pd 2oz			22		6pd 1oz
    
    I can't defend these numbers, I'm just passing info along. :-)
    
    Ken
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53.1MRKTNG::HOJLOWed Sep 04 1991 12:529
    Interesting weights/lengths especially in the smallie list.  Last month
    I caught a 5 lb. 2 oz. smallie that was just barely over 22".  
    
    I'll have to go through my clubs past records and see if there is any
    useful data there.  I'll post it when I can.
    
    
    
    Paul
53.2My 7+# Largemouth was only 24"....DELNI::JMCDONOUGHFri Sep 06 1991 13:2713
       From my experience with Largemouth Bass, there is very little if any
    correlation between length and weight. 
    
      Example: If I remember correctley the current U.S. RECORD was only
    26.5 inches long---but he was almost 28 inched in GIRTH. A 20 inch
    female in pre-spawn condition could easily go 5.5 pounds, yet a 20 inch
    male caught in early spring after fasting all winter could weigh in at
    a pound and a half...
    
      Weight depends on numerous factors, the biggest being the amount and
    availability of the food supply and the time of the year..
    
    John Mc 
53.3HPSTEK::MMURPHYFri Sep 06 1991 14:3910
    
     YOO
    
         I  know someone that caught a 9lb 4oz largemouth that was
     24" long and 24" girth.  The lenght and weight on the chart is
     close up to about 3lb after that forget it. Season and spawn
     play to much of a part on the weight.
    
                                                       kiv
    
53.4Look in the "OLD" notesfileHPSTEK::BCRONINFri Sep 06 1991 14:537
    
    Kiv!!  Your memory still works!!
    	Somewhere in the "old" fishing notes is a formula that includes
    both length, girth, and a few calculations.  I think the comments
    following it talked about how accurate it is...  Never tried it
    myself however.
    				B.C.
53.5Slightly off on your American RecordSEMIU5::MATTSONWed Sep 11 1991 09:5016
    re.2
    
    	The current record is 22 lbs and 4 ounces, 28 1/2 inch girth, 32 1/2
    inches long. It was caught by George Perry in 1932.  After weighing and
    measuring it at a local store, he took the fish home and he and his
    family ate it. 
    
    	The information given in this original note is a statistical
    average.  Meaning that you'll always find examples that are above or
    below.  I have a Golden Ruler that has the length and the corresponding
    approximation for weight written on it, 95% of the time it's within an
    ounce or two of the weight of the bass, after I've weighed the fish with 
    my Normark scale.  So for the most part the data is accurate, but I
    agree at certain times it can be off by a lot.  
    
    							Madd Matt
53.6Fish weight formula (Largemouth)WMOIS::BOURGAULT_DTue Sep 17 1991 13:4710
    The formula for largemouth is  Length x Length x Length
                                   ------------------------    =
                                            1600
    
     ex. 20" x 20" x 20" = 8000
         --------------    ---- = 5 lbs
           1600            1600
    
   This formula is pretty much what is used by the golden rule. I'm not
    sure but I think the divider used for smallie's is 1550 ?
53.7Correction WMOIS::BOURGAULT_DTue Sep 17 1991 13:481
    Realized I made a typo on the smallie divider should be 1650?
53.8it's all in the dominator ...WFOV12::WHITTEMORE_Jmaid in AmericaWed Sep 18 1991 19:2630

   As per 'the In-Fisherman' November '91 - Page 14 


         Length x Length x Length
         ------------------------
                denominator


    denominator;

                  1200        -    Bluegill
                      1250    -    Crappie
                      1400    -    White Bass
                  1600        -    Bass
                      2000    -    Catfish
                  2700        -    Walleye ('Stream' Trout, Perch)
                  3500        -    Pike

    Determine the denominator for other species based on body-type;
                         White (calico) Bass between Bluegill and 'Bass'
                         'Stream' Trout and Perch the same as Walleye

                    (a picture's worth a thousand words).

    'Adjust your final calculation up or down, given the condition
(skinny, average, fat) of the fish.'

Joe Whittemore -   etc. etc.