NOAA Technical Memorandum NMFS-F/NEC-66 

Guidelines for Estimating Lengths at Age 

for 18 Northwest Atlantic Finfish 

and Shellfish Species 

U.S. DEPARTMENT OF COMMERCE 

National Oceanic and Atmospheric Administration 

National Marine Fisheries Service 

Northeast Fisheries Center 

Woods Hole, Massachusetts 

May 1989 
Recent issues in this series 

36. Growth and Survival of Larval Fishes in Relation to the Trophodynamics of Georges Bank Cod and 

Haddock. By Geoffrey C. Laurence and R. Gregory Lough. January 1985. xvi + 150 p., 67 figs., 15 tables, 1 app. NTIS 

Access. No. PB85-220093/AS. 

37. Regional Action Plan. By Bruce E. Higgins, Ruth Rehfus, John B. Pearce, Robert J. Pawlowski, Robert L. 

Lippson, Timothy Goodger, Susan Mello Roe, and Douglas W. Beach. April 1985. ix + 84 p., 4 figs., 6 tables, 9 app. 

NTIS Access. No. PB85-219962/AS. 

38. The Shelf/Slope Front South of Nantucket Shoals and Georges Bank as Delineated by Satellite Infrared 

Imagery and Shipboard Hydrographic and Plankton Observations. By J. B. Colton, Jr., J. L. Anderson, J. E. 

O'Reilly, C. A. Evans-Zetlin, and H. G. Marshall. May 1985. vi + 22 p., 14 figs. NTIS Access. No. PB85-221083/AS. 

39. USA Historical Catch Data, 1904-82, for Major Georges Bank Fisheries. By Anne M. T. Lange and Joan E. 

Palmer. May 1985. iii + 21 p., 12 figs., 2 tables. NTIS Access. No. PB85-233948/AS. 

40. Indexing the Economic HeaIth of the U.S. Fishing Industry's Harvesting Sector. By Virgil J. Norton, Morton 

M. Miller, and Elizabeth Kenney. May 1985. v + 42 p., 44 figs., 25 tables, 1 app. NTIS Access. No. PB85-217958/ 

AS. 

41. Calculation of Standing Stocks and Energetic Requirements of the Cetaceans of the Northeast United States 

Outer Continental Shelf. By Robert D. Kenney, Martin A. M. Hyman, and Howard E. Winn. May 1985. iv + 99 p., 

1 fig., 5 tables, 1 app. NTIS Access. No. PB85-239937/AS. 

42. Status of the Fishery Resources OfT the Northeastern United States for 1985. By Conservation & Utilization 

Division, Northeast Fisheries Center. August 1985. iii + 137 p., 46 figs., 49 tables. NTIS Access. No. PB86-125473/ 

AS. 

43. Status of the Fishery Resources OfT the Northeastern United States for 1986. By Conservation & Utilization 

Division, Northeast Fisheries Center, September 1986. iii + 130 p., 45 figs., 48 tables. NTIS Access. No. PB87-122115/ 

AS. 

44. NOAA's Northeast Monitoring Program (NEMP): A Report on Progress of the First Five Years (1979-84) 

and a Plan for the Future. By Robert N. Reid, Merton C. Ingham, and John B. Pearce, eds., and Catherine E. Warsh 

(water quality), Robert N. Reid (sediments & bottom organisms), Adriana Y. Cantillo (trace contaminants in tissues), 

and Edith Gould (biological effects), topic coords. May 1987. xi + 138 p., 13 figs., 1 table, 9 app. NTIS Access. No. 

PB87-210100. 

45. Food and Distribution of Juveniles of Seventeen Northwest Atlantic Fish Species, 1973-1976. By Ray E. 

Bowman, Thomas R. Azarovitz, Esther S. Howard, and Brian P. Hayden. May 1987. xi + 57 p., 10 figs., 19 tables. NTIS 

Access. No. PB87-215851/AS. 

46. Influence of Freshwater Inflows on Estuarine Productivity. By James G. Turek, Timothy E. Goodger, Thomas 

E. Bigford, and John S. Nichols. May 1987. iii + 26 p. NTIS Access. No. PB87-213666/AS. 

47. MARMAP Surveys ofthe Continental Shelffrom Cape Hatteras, North Carolina, to Cape Sable, Nova Scotia 

(1977-1984). Atlas No.2. Annual Distribution Patterns of Fish Larvae. By Wallace W. Morse, Michael P. Fahay, 

and Wallace G. Smith. May 1987. viii + 215 p., 27 figs., 2 tables. NTIS Access. No. PB87-232831/AS. 

48. Indexed Bibliography of the Bay Scallop (Argopecten irradians). By Barbara D. Sabo (Gibson) and Edwin W. 

Rhodes. May 1987. iii + 85 p. NTIS Access. No. PB87-231411!AS. 

49. Northeast Fisheries Center Framework for Inshore Research. By Research Planning & Coordination Staff, 

Northeast Fisheries Center. July 1987. vi + 44 p., 2 figs., 2 tables. NTIS Access. No. PB87-232286/AS. 

(continued on inside back cover) 
NOAA Technical Memorandum NMFS-F/NEC-66 

This TM series is used for documentation and timely communication of preliminary results, 

interim reports, or special purpose information, and has not received complete formal review, 

editorial control, or detailed editing. 

Guidelines for Estimating Lengths at Age 

for 18 Northwest Atlantic Finfish 

and Shellfish Species 

Judith A. Penttila, Gary A. Nelson, and John M. Burnett, III 

Woods Hole Lab., Nationill Marine Fisheries Service, Woods Hole, MA 02543 

U. S. DEPARTMENT OF COMMERCE 

Robert A. Mosbacher, Secretary 

National Oceanic and Atmospheric Administration 

William E. Evans, Administrator 

National Marine Fisheries Service 

James W. Brennan, Assistant Administrator for Fisheries 

Northeast Fisheries Center 

Woods Hole, Massachusetts 

May 1989 
Page iii 

Table of Contents 

Introduction ............................................................................................................................................ 1 

References .................................. ............ ........... ....... .......... ............ ................... .......... ... ......... ...... ... ...... 2 

Table 1. Maximum ages observed for various finfish species collected during Northeast Fisheries Center 

research vessel survey cruises, 1963-1988 ...................................................................................... 1 

Paired Tables and Figures: Estimated length (shell height) at age 

American plaice ................ ................ ........... .......... ......... ........ .......... .................................... ................ 4 

Atlantic cod........................... ............... ............ ........ ........ .......... ........... .................................... ............. 6 

Atlantic herring.... ...................... ............. .......... ......... ......... .......... ........ ................................................. 8 

Atlantic mackerel ................................................................................................................................ 10 

Bluefish ................................................................................................................................................ 12 

Butterfish ................................... ............. ................... ........... .......... ..................... ............................... 14 

Haddock .............................................................................................................................................. 16 

Pollock ................................................................................................................................................ 18 

Redfish ................................................................................................................................................ 20 

Red hake .............................................................................................................................................. 22 

Scup .................................................................................................................................................... 24 

Sea scallop ................ ...................... ........... ............... ...... ....... ............. ..................................... ........... 26 

Silver hake .................................. ........... .......................... ......... ........... ...................... ......................... 28 

Summer flounder................ ................ ..................... ........... ....... ............ ............................................... 30 

Surf clam ....................................... .............. .......... ............ ........... .......... ....................................... ....... 32 

Winter flounder.............. ............ ............... .......... ............. .......... .............. ............................................ 34 

Witch flounder ...... ............................. .............. ......... ............ ............ .................................................. 36 

Yellowtail flounder .............................................................................................................................. 38 
Page 1 

INTRODUCTION 

This report provides estimates of mean lengths at age for 18 species of Northwest Atlantic finfish and shellfish, 

together with maximum ages observed for selected finfish species collected during Northeast Fisheries Center (NEFC) 

bottom trawl surveys (Table 1). If growth rates are sufficiently different between sexes or geographical areas, separate 

mean lengths are given for each sex or area for which data are available. The information used to prepare this report was 

taken from published sources and unpublished data files archived at the Woods Hole Laboratory in Woods Hole, 

Massachusetts (all included in the references to this paper). Since some of this information is based on incomplete data 

sets or has not been updated for many years, estimated lengths at age are meant to be used only in a general sense and are 

not intended for use in generating growth equations for analytical purposes. The intent is to provide a general guide for 

use in estimating the average age of a finfish or shellfish specimen at a given length. It is rarely possible to assign exact 

ages to specimens without examining actual age structures (scales, otoliths, chondrophores, etc.), but the tables and graphs 

should provide an approximation of the age of any given specimen. For example, a 19.7 in. (50.0 cm) female American 

plaice would be estimated as being approximately nine years old. 

Each table and corresponding graph gives information on estimated lengths at age in units of both inches and 

centimeters. By convention, a birthdate of January 1 is assumed. This means that although an individual is not one-year 

old biologically until one year from the time it was hatched, normal age determination convention considers it to be oneyear old the following January 1. This is done to simplify assignment of individual fish to year classes for stock status 

assessments and other research. The lengths at age given in the tables represent the estimated lengths on the assigned 

birthdate. For example, six-year-old male American plaice would be on average 15.1 in. (38.4 cm) long in January. 

Table 1. Maximum ages observed for various finfish species collected during Northeast Fisheries Center research vessel 

survey cruises, 1963 - 1988 

Species Years Maximum age 

Alewife 1973-1985 14 

American plaice 1976-1984 24 

Atlantic cod 1970-1988 18 

Atlantic herring 1963-1988 18 

Atlantic mackerel 1973-1987 19 

Blueback herring 1982-1985 12 

Bluefish 1985-1987 10 

Butterfish 1977-1988 6 

Haddock 1963-1988 14 

Pollock 1970-1988 19 

Redfish 1975-1980 58 

Red hake 1970-1985 14 

Scup 1977-1980 11 

Silver hake 1973-1987 14 

Summer flounder 1975-1988 12 

White hake 1987 only 18 

Winter flounder 1976-1988 14 

Witch flounder 1980-1988 30 

Yellowtail flounder 1963-1988 17 
Page 2 

REFERENCES 

Almeida, F.P. Pers. comm. (red hake length at age). Nat. 

Mar. Fish. Serv., Woods Hole, MA 02543. 

Almeida, F.P. Pers. comm. (silver hake length at age). Nat. 

Mar. Fish. Serv., Woods Hole, MA 02543. 

Anderson, E.D., and AJ. Paciorkowski. 1980. A review of 

the Northwest Atlantic mackerel fishery. Rapp. P.-V. 

Reun. Cons. Int. Explor. Mer. 177: 175-211. 

Anthony, Y.C. 1972. Population dynamics of the Atlantic 

herring in the Gulf of Maine. Ph.D. thesis, University 

of Washington, Seattle, W A 246 p. 

Burnett, J. 1987. The population biology of the witch 

flounder, Glyptocephalus cynoglossus (L.), in the 

Gulf of Maine - Georges Bank region. M.Sc. thesis, 

University of Massachusetts, Amherst, MA. 116 p. 

Burnett, J.M. Pers. comm. (bluefish length at age). Nat. 

Mar. Fish. Serv., Woods Hole, MA 02543. 

Campbell, MJ., J.A. Penttila, and F.E. Nichy. Unpub!' ms. 

Growth of scup. Nat. Mar. Fish. Serv., Woods Hole, 

MA 02543. 

Clark, S.H., W.J. Overholtz, and R.C. Hennemuth. 1982. 

Review and assessment of the Georges Bank and Gulf 

of Maine haddock fishery. J. NorthwestAtl. Fish. Sci. 

3: 1-27. 

Fogarty, M.J. 1981. Review and assessment of the summer 

flounder (Paralichthys dentatus) fishery in the Northwest Atlantic. Nat. Mar. Fish. Serv., Northeast Fish. 

Ctr., Woods Hole Lab. Ref. Doc. No. 81-25. 54 p. 

Lux, F.E. 1969. Age and growth of the winter flounder, 

Pseudopleuronectes americanus, on Georges Bank. 

Fish. Bull., U.S. 71: 505-512. 

Mayo, R.K. 1980. Exploitation of redfish, Sebastes 

marinus (L.) in the Gulf of Maine - Georges Bank 

region, with particular reference to the 1971 year class. 

J. NorthwestAtl. Fish. Sci. 1: 21-37. 

Mayo, R.K. Pers. comm. (pollock length at age). Nat. Mar. 

Fish. Serv., Woods Hole, MA 02543. 

Moseley, S.E. 1986. Age structure, growth, and intraspecific growth variations of yellowtail flounder, Limanda 

ferruginea (Storer), on four northeastern United States 

fishing grounds. M.Sc. thesis, University of Massachusetts, Amherst, MA. 110 p. 

Penttila, J.A, and Y.M. Gifford. 1976. Growth and 

mortality rates for cod from the Georges Bank and 

Gulf of Maine areas. Int. COl1lm. Northwest Atl. Fish. 

Res. Bull. 12: 29-36. 

Serchuk, F.M., and S.A. Murawski. 1980. Assessment and 

status of surf clam Spisula solidissima (Dillwyn) populations in offshore Middle Atlantic waters ofthe United 

States. Nat. Mar. Fish. Serv., Northeast Fish. Ctr., 

Woods Hole Lab. Ref. Doc. No. 80-33. 46 p. 

Serchuk, F.M. Pers. comm. (sea scallop length at age). 

Nat. Mar. Fish. Serv., Woods Hole, MA 02543. 

Sullivan, L.F. 1982. American plaice, Hippoglossoides 

platessoides, in the Gulf of Maine: I. The fishery II. 

Age and growth III. Spawning and larval distribution. 

M.Sc. thesis, University of Rhode Island, Kingston, 

RI. 95 p. 

Waring, G.T. Pers. comm. (butterfish length at age). Nat. 

Mar. Fish. Serv., Woods Hole, MA 02543. 
Page 3 

PAIRED TABLES AND FIGURES: 

ESTIMATED LENGTH (SHELL HEIGHT) AT AGE 
"U 

American plaice, Gulf of Maine ~ (1) 

~ 

Male Female 

Age Length Length Length Length 

(in) (cm) (in) (cm) 

1 3.8 9.7 3.5 8.9 

2 6.9 17.5 6.9 17.6 

3 9.5 24.1 9.8 24.8 

4 11.7 29.7 12.2 31.0 

5 13.5 34.4 14.3 36.2 

6 15.1 38.4 15.9 40.5 

7 16.4 41.7 17.4 44.2 

8 17.5 44.6 18.7 47.4 

9 18.5 47.0 19.7 50.0 

10 19.3 49.0 20.6 52.2 

11 20.0 50.7 21.3 54.1 

12 20.5 52.1 21.9 55.6 

13 21.0 53.3 22.4 57.0 

14 21.4 54.3 22.9 58.1 

15 21.7 55.2 23.3 59.1 
~ 

-8 

AMERICAN PLAICE 

70 I : : : 

GULF OF: MAINE 

: : : 

~ :: : /. : : :: ::: 

~ 30 ......... 1 ......... I ......... , .... /.y.~ .............•......... : ...................................... ·········!·········j·········i········· ~ ... : .. : : .. :h: : : : :: ::: Z i : : : : :: ::: ~ 20 ........ ; ...... : ........ : ...... : ........ l ......... : ......... l ........ L ...... L ........................ :. ........ ~ ......... ~ ........ . ::E 

10 -+. ·····f······· ........................................................................ : ........................... : ......... : ....... . 

26 

24 

22 

20 

18 

16 

14 

12 

10 

8 

6 

4 

2 

o Iii i I 0 

o 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 

AGE 

...-... 

Z 

0 

~ 

t; 

Z 

~ 

~ 

Z 

< 

~ 

::E 

"U 

~ (l) 

01 
"U 

Atlantic cod Il> 

co 

(I) 

0> 

Georges Bank Gulf of Maine 

Age Length Length Length Length 

(in) (em) (in) (em) 

1 10.3 26.1 4.6 11.7 

2 15.7 39.9 10.4 26.4 

3 20.5 52.1 15.6 39.6 

4 24.8 63.0 20.2 51.3 

5 28.6 72.6 24.3 61.7 

6 31.9 81.1 28.0 71.0 

7 34.9 88.7 31.2 79.3 

8 37.6 95.4 34.1 86.6 

9 39.9 101.4 36.7 93.2 

10 42.0 106.7 39.0 99.0 

11 43.9 111.4 41.0 104.2 

12 45.5 115.5 42.9 108.9 

13 45.9 119.2 44.5 113.0 

14 48.2 122.5 45.9 116.7 

15 49.4 125.4 47.2 119.9 
ATLANTIC COD 

140 I : r 

120 

..-... 

~ 100 8 

::r:: ts 80 

Z 

~ 

~ 60 

Z 

< 

~ 40 

~ 

;' · . . . . ••••••••• ' ••••••••••••••••••• I ••••••••• ~ ••••••••• ; •••• ·····I .. ·······!·········~···.····~ .~ ...... ~; .... ~ ............. ~ ......... ; ..... :..:.:-. .. ~: 

GEORGES BANK ~ :. j,. ( ,. : ~ : . :": : · . . . . : ......-: : : 

•••••••..••••• l •• • •• • •• ••••••• •••• i·········;·········!· ........ ; ........... ; ..... '.:'/:" ...... ;.~ ...... ; ........... ; .......... ; .......... ! ......... . 

V

. · . . . ~. .;. ; : ;/; 

: : /; : :/ : . : /: : . . . •••••••••••••••••••••••••••• j ••••••••••••••••••••••••• : ••••••••• ~· •• ····i·········i·········i·········i····· .... j ••.•.•..••••••.•••••••••••. : /: : : : : : 

: ~ N GULF OF MAINE 

: /: : : : : : : :/: : : : : : : · . . . . . . . . •• , ...... , ••......•••...•..•• , ..•.•. I •. : .• ' •.• /~······ .•. ! ......... ! ......... ! ......... : ......... ! ......... : ......... ! .......................... . · , . . . . . . . : / : :::: : 

: /: ~ ~ l l l 1 

~/ ~ ~ ~ ~ ~ ~ ~ ....... ··.·········~·········/········~·········~·········l·········l·········!·········l·········l········· .......... : .......................... . 

l / : [ : : ~ i : [ [ 

[ / [ [ ~ [ 1 j : ~ : 

: / ~ ~ ~ ~ ~ ~ ! ~ : . 20 -1 ......... \ .. '/' ... : ......... : ......... : ......... : ......... \ ......... : ......... : ......... : ......... : ......... : ....... j .......................... . 

/ : : ~ ~ : i : : i . . ., ..... : : :: ::::: 

55 

50 

45 

Z 

40 c" 

35 ~ 

ts 

30 Z 

~ 

25 ~ 

Z 

20 < 

~ 

15 ~ 

10 

5 . . .. ..... 

o Iii i j iii j iii j I 0 

o 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 

AGE 

"0 

~ (t) 

..... 
"'0 

Atlantic herring II) 

co 

CD 

(X) 

Georges Bank Western Maine Eastern Maine 

Age Length Length Length Length Length Length 

(in) (em) (in) (em) (in) (em) 

1 5.1 13.0 4.3 10.8 3.3 8.4 

2 7.6 19.3 7.0 17.7 6.1 15.5 

3 9.3 23.7 8.9 22.7 8.3 21.0 

4 10.6 26.9 10.3 26.2 9.9 25.1 

5 11.5 29.1 11.3 28.7 11.1 28.2 

6 12.1 30.7 12.0 30.5 12.0 30.6 

7 12.5 31.8 12.5 31.8 12.8 32.4 

8 12.8 32.6 12.9 32.8 13.3 33.7 
ATLANTIC HERRING 

40~----~--~----~----~----~--~----~--~ 

35 ~ .................. ~ .................. : .................. : .................. : .................. ~ .................. : .................. : .................. 1 14 

... -_ ......... . 

-- ---. ::: :. 12 ---. ~ 30 .................. : .................. : .................. : .................................... ~........ ~ ... :.................. .................. Z ~ .' I .~. • 

g GEORGES BANK ~ c.- :;: •• ::-•• T···· i 0 

::c: 25 .................. ; ............... ) .................. ; ...... / .. ~;.~~~~ ................ ~ ................. +................. .................. 10 ~ 

G C-... ::: ::;',/::: ./ /' : :: l?C"":""' 

Z 20p,/;/<[p,pp, .······.·P.······ 8 ~ ~ :: / ,': : :: . ., ~ :: ,': . :: ~ 

: /. ,,': : : : 

Z 15 ................. l ...... /. /'~"W:'EST" ER:N"'MAI'N~ ·E· .. ·········,:·············· .. ·· .................. 6 Z ~ .,..... 

: ,':. : ~ 

~ 

~ : / ,-' : ::: r~., r~., :, : ::: ~ 

~ :/"':.::: :::s 

::;s 10 ........... l;r//·······.·································i· PP ...................j.......... .................. 4 

/. ~: . . : . 

5 -1 ........ /l.: ........ EASTERNMAINE··tpj·············· .............+ 2 

o Iii iii i I 0 

"U 

~ CD 

o 123 4 5 6 7 8 <0 

AGE 
"U 

Atlantic mackerel, all areas combined ~ (0 

en 

...... 

0 

Age Length Length 

(in) (em) 

1 8.2 20.8 

2 10.0 25.5 

3 11.4 29.0 

4 12.5 31.8 

5 13.3 33.9 

6 14.0 35.5 

7 14.4 36.7 

8 14.8 37.6 

9 15.1 38.3 

10 15.3 38.9 
ATLANTIC MACKEREL 

60~--------------------------~--~----~--~---' 

~ 8 50 

::r:: 

~ 

l? 40 Z 

~ 

~ 

Z 30 

~ 

~ 

~ 

ALL A~EAS CO~BINED · . · . · . · . · . · . · . · . · . · . , . . . ..................................................................................................................................................... 

............. .............. .................. . .......................................................................................... . 

20 -1 .............. : .............. : .............. : ................................................................................................ .. 

· . . 

22 

,.-,. 

20 Z 

L!..-

18 ~ 

16 ts 

Z 

14 ~ 

~ 

12 Z 

~ 10 ~ 

8 ~ 

6 

10 -1 .............. : .............. : .............. : .......................................................... , ....................................... ~ 4 

2 

o I I I I -+0 

o 1 2 3 4 5 6 7 8 9 10 

AGE 

"U 

~ CD 

....... 

....... 
"'0 

ED 

Bluefish, all areas combined co 

CD 

... 

I\) 

Age Length Length 

(in) (em) 

1 8.9 22.6 

2 15.0 38.1 

3 19.8 50.2 

4 23.5 59.8 

5 26.5 67.3 

6 28.8 73.1 

7 30.6 77.8 

8 32.0 81.4 

9 33.1 84.2 

10 34.1 86.5 

11 34.7 88.2 

12 35.3 89.6 

13 35.7 90.7 
BLUEFISH 

110~~--~~--~-:--:-:--:--:--:--:-~~ 

100 

90 

..-.. 

=s 80 

8 

~ 70 

~ 

C-' 60 

Z 

~ 50 

Z 40 ~ 

~ =s 30 

20 

10 

ALL AREAS COMB~NED ~ 40 ........... : ............................................................................................................................ . 

................................................... ~ .................................................... ~ ........... ; .......... : .. 35 

. . · . . . . . . . . . .. . . . . . . .. .......... . . . . . . . . .. . .......... · r . . . . . . . . .. .......... . . . . . . ..,.. j' .......... [ ......... '1' .......... f ........... ~ .......... . 

.. 

,. 

· 

, 

, 

...., 

..,.. 

.... 

.... 

,.,.. . 

. · . . . . . . . · . . . . . . . . . .. . . . . . . .. .......... . . . . . . . . .. . .......... :... . ... '1' .......... f ......... '1' .......... f ......... '1' .......... f ........... ~ .......... . 

, , . . . . . . , . . . . . . . · . . . . . . . · . . . . . . , · . . . . . . . • • • • • I , • 

· . . . . . . . . . . ... , . . . .. .......... . . . . . . . . . . . ......... : ........... ~ ........... : ........... ~ ........... ~ ........... : ........... ; ........... : .......... . 

. . . . · . . . . . . . . . .. . . . . . . .. .......... . ......... i ........... : ............ : ........... : ........... ~ ........... : ............ : ........... i .•••••.•••• : •.•••..•••• 

· . . . . . . . . . . . . . . . . . .. . ........ -: · ...........' ~ .......... -: ............ : .......... .; ........... ~ 

. 

........... : ............,. ;- .......... ; ........... : .......... . · . . . . . . . . . · . . . . . . . . . · . . . . . . . . . · . . . . . . . . . · . . . . , . . . . · . . . . . . . . . · . . . . . . . . . · . . , . . . . . . · . . . . . . . . . . · . . . . . . . . . . . .. . .... ~ ........... : ........... ~ ........... : ........... ~ ........... ~ .......... ~ ........... ~ ........... : ........... ~ ........... : .......... . · . , . . . , . . . . , , . . . . . . , , . · . . , . . . . . . . · . . . . . . . . . . · . . . . . . . . . . · . . . . , . . . . . · . , . . . . , . . . · ' . , . . . . , . . . · . . . . . . . . . . . ••••••••••••••••••••••• 1 ••••••••••••••••••••••• 1 ••••••••••• • ••••••••••• 1 ....................... 1 .................................... 1 ••••••••••••••••••••••• 

: : : : : : : : : : : : 

Z 

30 ~ 

~ 

25 t; 

Z 

20 ~ 

Z 

15 ~ 

~ 

10 ~ 

· . . . . . . . . . . . 

· .......... [ ' ................... [ , ........................... [ [ [ " . , ....... , ~ 

[ 

........... [ " .......... ~ 

[ 

................................................ : : [ [ ' ..... , .... . 

~5 : : : : : : : : : : : : 

: : : : : : : : : : : : · ......... . 

o I iii iii iii iii I 0 

o 1 2 3 4 5 6 7 8 9 10 11 12 13 

AGE 

"'U 

~ t1l 

...... 

(.0) 
"U 

Butterfish, Georges Bank - Middle Atlantic ~ (I) 

..... 

.,.. 

Age Length Length 

(in) (em) 

1 5.0 12.7 

2 6.9 17.5 

3 7.7 19.5 

4 8.0 20.4 
BUTTERFISH 

30~--~--------~----~--~----~--~--~ 

GEORGE$ BANK/M~DDLE ATLANTIC 11 

25 ---l .................. ~ ................. ~ ................ .. : .................. : .................. : ................. ~ .................. : .................. r 10 

~ g 20 .. ..... ...... :... 9 ... : .... ........ : ............ ~..... i. - rZ-"" ............. . . .... 1 8 ~ 

~ 

~ 

~ 15 ................................................... (........1: 

~ · : 

· ., ., 

:: 

~ · · 

: .' 

., 

:: 

· 

· · ., 

., 

., 

Z 10 .................................. ~ .................. ~ 

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Haddock, Georges Bank - Gulf of Maine ~ (\) 

.... 

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Age Length' Length 

(in) (em) 

1 6.9 17.5 

2 13.3 33.8 

3 17.9 45.5 

4 21.3 54.0 

5 23.7 60.1 

6 25.4 64.5 

7 26.6 67.6 

8 27.5 69.9 

9 28.1 71.5 

10 28.6 72.7 

11 29.0 73.6 

12 29.2 74.2 

13 29.4 74.6 

14 29.5 75.0 

15 29.6 75.2 
HADDOCK 

90~--~~--------~~--~----~--~~--~------~ 

GEqRGE~ BAN~/GU~F OF: MAlr1E 

80 --1 ........................................................................................................................................... . 

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10 

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Pollock, Georges Bank - Gulf of Maine 

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Age Length Length 

(in) (em) 

1 6.6 16.7 

2 12.1 30.7 

3 16.8 42.6 

4 20.7 52.5 

5 24.0 60.9 

6 26.8 68.0 

7 29.1 74.0 

8 31.1 79.0 

9 32.8 83.3 

10 34.2 86.9 

11 35.4 89.9 

12 36.4 92.4 

13 37.3 94.7 

14 38.0 96.4 

15 38.5 97.9 

16 39.1 99.2 

17 39.5 100.3 

18 39.8 101.2 

19 40.1 101.9 

20 40.4 102.6 
POLLOCK 

120~------~--~--~--~--~~--~--~---' 

GEORG~S BANK/GULF QF MAINt 45 

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AGE 

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CD 
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Redfish, Gulf of Maine ~ CD 

I\) 

0 

Male Female 

Age Length Length Length Length 

(in) (em) (in) (em) 

1 5.2 13.2 4.6 11.7 

2 6.1 15.5 5.6 14.2 

3 6.9 17.5 6.6 16.7 

4 7.6 19.2 7.4 18.9 

5 8.2 20.8 8.3 21.0 

6 8.7 22.2 9.0 22.8 

7 9.2 23.4 9.6 24.5 

8 9.6 24.5 10.2 26.0 

9 10.0 25.5 10.7 27.3 

10 10.4 26.4 11.3 28.6 

11 10.7 27.2 11.7 29.7 

12 11.0 27.9 12.1 30.7 

13 11.3 28.6 12.4 31.6 

14 11.5 29.1 12.8 32.4 

15 11.7 29.6 13.0 33.1 

16 11.9 30.1 13.3 33.8 

17 12.0 30.5 13.5 34.4 

18 12.1 30.8 13.7 34.9 

19 12.3 31.2 13.9 35.4 

20 12.4 31.4 14.1 35.8 

21 12.5 31.7 14.3 36.2 

22 12.6 31.9 14.4 36.6 

23 12.6 32.1 14.5 36.9 

24 12.7 32.3 14.6 37.2 

25 12.8 32.5 14.7 37.4 
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Red hake, Gulf of Maine - Middle Atlantic Q) 

co 

CD 

I\) 

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Age Length Length 

(in) (em) 

1 7.0 17.8 

2 9.9 25.2 

3 12.3 31.3 

4 14.3 36.3 

5 15.9 40.5 

6 17.3 43.9 

7 18.4 46.7 

8 19.3 49.1 

9 20.1 51.0 

10 20.7 52.6 

11 21.2 53.9 

12 21.7 55.0 

13 22.0 55.9 

14 22.3 56.7 

15 22.6 57.3 
2 

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70~----~--~~----------~--~--~~--~~--~-' 

ALL , ARE~S . COMBIN~D , . · . , . · . . . · . , . · . . . , • • I 

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• , • I · , . , ......... : ......... : ......... ! ......... ! ...................................................... I ••••••••••••••••••• I ••••••••• l ••••••••••••••••••• 60 I • , • 

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30 ..... j... . .. ; ...... ./; ......... ~ ......... ; ....•.... : ......... ; ......... ; .....•... ; ......... ; ....••... ; ......... : .•....... ; ......... ; ....•.... 

20 ......... : . ./. .... : ......... : ......... : ......... : ......... : ......... : ......... : ......... : ......... : ......... : ......... : ......... : ......... : ........ . 

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AGE 

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Scup, all areas combined ~ (I) 

I\) 

.,.. 

Age Length Length 

(in) (em) 

1 3.8 9.7 

2 5.9 14.9 

3 7.6 19.2 

4 9.0 22.8 

5 10.2 25.9 

6 11.2 28.5 

7 12.1 30.7 

8 12.8 32.5 

9 13.4 34.1 

10 13.9 35.4 

11 14.4 36.5 

12 14.8 37.5 

13 15.0 38.2 
Page 25 

(NI) Hl~N~1 NV~W 

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Sea scallop ~ (1) 

I\) 

m 

Georges Bank Middle Atlantic Gulf of Maine 

Shell Height Shell Height Shell Height 

Age (in) (mm) (in) (mm) (in) (mm) 

2 1.0 26 1.4 35 1.1 27 

3 2.4 62 2.6 65 2.2 56 

4 3.5 88 3.5 88 3.1 79 

5 4.2 106 4.1 104 3.9 98 

6 4.7 120 4.6 117 4.4 113 

7 5.1 129 5.0 126 4.9 125 

8 5.4 136 5.2 132 5.3 135 

9 5.6 141 5.4 138 5.6 143 

10 5.7 144 5.6 141 5.9 149 

11 5.7 146 5.7 144 6.1 154 

12 5.8 148 5.7 146 6.2 158 
SEA SCALLOPS 

180~--~--~--~~--~--~--~--~--~--~~--~ 7 

~160 

=s 

~,140 

~ G 120 

~ 

~ 100 ~ 

· . . . .. . . . . . . . . . . . . . . : . ........... ! .......... .. : ...... ...... ~ .......... .. : . ........... ~ . . . . . . . . . . . . . . . . . . . . .. . ........... :............ . ........... : .. ......... . 

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o 1 2 3 4 5 6 7 8 9 10 11 12 

AGE 

i 

(I) 

~ 
"tJ 

Silver hake ~ CD 

I\) 

(XI 

Gulf of Maine Southern New EnglandMiddle Atlantic 

Age Length Length Length Length 

(in) (cm) (in) (cm) 

1 5.3 13.5 4.7 12.0 

2 8.7 22.2 9.3 23.6 

3 11.5 29.3 12.3 31.3 

4 13.9 35.3 14.3 36.3 

5 15.9 40.3 15.6 39.6 

6 17.5 44.5 16.5 41.8 

7 18.9 48.0 17.0 43.3 

8 20.0 50.9 17.4 44.2 

9 21.0 53.3 17.7 44.9 

10 21.8 55.3 17.8 45.3 

11 22.4 57.0 18.0 45.6 

12 23.0 58.4 18.0 45.7 
SILVER HAKE 

70~-:--~--:--:--:--:--~~--~~--~~ 

25 

60 -1 ............•............ : ............•............ :.GDLF·OF·MAINE·K,······ .. ·········,························ 

'2 50 l···········J···········i ............•............ I ............•........... ,.................... ··i··········I·~··l··~·····.···~····· 20 ! 

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AGE 

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~ CD 

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Summer flounder., all areas combined " IIJ 

co 

CD 

c.> 

0 

Male Female 

Age Length Length Length Length 

(in) (em) (in) (em) 

1 5.8 14.8 5.0 12.8 

2 9.6 24.3 9.6 24.3 

3 12.7 32.3 13.4 34.1 

4 15.3 38.9 16.7 42.4 

5 17.5 44.5 19.5 49.6 

6 19.3 49.1 21.9 55.6 

7 20.9 53.0 23.9 60.8 

8 22.2 56.3 25.7 65.2 

9 23.2 59.0 27.2 69.0 

10 24.1 61.2 28.4 72.2 

11 24.8 63.1 29.5 74.9 

12 25.5 64.7 30.4 77.2 

13 26.0 66.0 31.2 79.2 

14 26.4 67.1 31.9 80.9 

15 26.8 68.0 32.4 82.3 
~ 

8 

SUMMER FLOUNDER 

100~----~~--~~--~~--~~--~~~--~~~ 

ALl! ARE~S COMBIN~D , . . . · . . . · . . . · . . . · , . . · , . . · . , . · . , . · . . , · . . . , . . . · . . . .. J' · . 

, .., ","" - 80 I""',···:········· ,., ...... : ......... ·········t·········:'········:·,,······ ..... ,.,' ····"···t·~·····:·········~··-;.;.; ._ .. : ........ . 

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AGE 

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Surf clam, offshore Middle Atlantic - Georges Bank ~ CD 

(.0) 

I\) 

Age Length Length 

(in) (mm) 

1 1.6 41 

2 2.8 71 

3 3.7 94 

4 4.4 111 

5 4.9 124 

6 5.3 135 

7 5.6 142 

8 5.& 148 

9 6.0 153 

10 6.1 156 

11 6.2 158 

12 6.3 160 

13 6.4 162 

14 6.4 163 

15 6.5 164 

16 6.5 165 

17 6.5 165 

18 6.5 165 

19 6.5 166 

20 6.5 166 
SURF CLAMS 

200 I : : : 

175 

~ 

6, 150 

~ 

G 

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OFFSHORE MIDDLE ATLANTIC · . . · . . · . . · . . · . . · · .'.' ..... 

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o 2 4 6 8 10 12 14 16 18 20 

AGE 

~ " 

CD 

~ 
Age 

1 

2 

3 

4 

5 

6 

7 

8 

9 

10 

11 

12 

13 

Winter flounder, Georges Bank 

Male Female 

Length 

(in) 

6.3 

10.4 

13.3 

15.4 

16.9 

18.0 

18.8 

19.4 

19.8 

20.2 

20.4 

20.6 

Length 

(cm) 

16.1 

26.3 

33.7 

39.0 

42.9 

45.8 

47.8 

49.3 

50.4 

51.2 

51.8 

52.2 

Length 

(in) 

6.3 

9.9 

12.7 

15.0 

16.8 

18.2 

19.4 

20.3 

21.0 

21.6 

22.0 

22.4 

22.7 

Length 

(cm) 

15.9 

25.1 

32.3 

38.1 

42.7 

46.3 

49.2 

51.5 

53.3 

54.8 

55.9 

56.9 

57.6 

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~ CD 

~ 
WINTER FLOUNDER 

70~----------~--~~--~~--~~--~~~ 

GEORGES BANK 25 

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12 19.0 48.2 20.2 51.2 

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7 15.5 39.4 16.7 42.5 19.1 48.6 

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