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Age and Growth Program

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Species Aged

Statistics

Ageing Methods

Production

Precision

Max Age

Validation

Highlighted Species

Pollock

Pacific Cod

Skates

Shortraker rockfish

Maximum Age Encountered

Scientific name

Common Name

Max Age (years)

Natural Mortality (per year)

Sample size

Flatfish

Alaska Plaice

0.11

5,358

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Survey	2002	89	200201	441	51	37
Survey	2005	89	200501	339	50	37
Survey	2005	89	200501	301	38	36
Survey	2009	88	200901	243	38	36
Observer	2002	A069	7473	97633	38	35

Arrowtooth Flounder

0.13

12,090

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Survey	2009	143	200901	506	56	32
Survey	2009	143	200901	232	78	29
Survey	2009	143	200901	871	84	27
Survey	2002	21	200201	109	62	25
Survey	2009	143	200901	12	70	25

Bering Flounder

0.14*

1,096

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Survey	2007	89	200701	33	39	30
Survey	2006	134	200601	72	38	29
Survey	1985	60	198501	78	40	28
Survey	2007	88	200701	46	42	27
Survey	2008	89	200801	12	39	27

Dover Sole

0.07*

4,777

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Survey	2009	94	200901	4	51	57
Survey	2009	94	200901	124	45	57
Survey	2009	94	200901	256	58	57
Survey	2009	94	200901	289	50	57
Survey	2009	94	200901	71	45	55

Flathead Sole

0.12

17,224

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Survey	2009	89	200901	186	50	34
Survey	1990	83	199001	331	38	33
Survey	2008	89	200801	14	40	33
Survey	2008	89	200801	177	40	32
Observer	2005	A057	9910	289256	47	32

Greenland Turbot

0.11*

3,603

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Survey	2009	88	200901	138	89	37
Survey	2003	89	200301	62	101	36
Survey	2003	89	200301	65	86	35
Survey	1998	89	199801	146	79	35
Survey	2005	89	200501	6	88	35

Kamchatka Flounder

0.13*

229

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Survey	1991	21	199110	32	85	33
Survey	2007	21	200712	16	83	32
Survey	2007	21	200712	11	91	30
Survey	1991	21	199110	46	91	30
Survey	2007	21	200712	7	84	27

Longhead Dab

0.26*

449

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Survey	2001	88	200101	23	32	16
Survey	2001	88	200101	20	28	13
Survey	2001	88	200101	5	23	13
Survey	2001	88	200101	42	35	13
Survey	2002	89	200201	51	31	13

Northern Rock Sole

0.14

15,149

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Survey	2003	147	200301	422	37	30
Survey	2001	57	200101	112	44	30
Observer	2009	A486	12896	516068	37	29
Survey	2009	88	200901	195	47	28
Survey	2001	57	200101	140	42	28

Rex Sole

0.08

5,005

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Survey	2001	57	200101	41	36	49
Survey	2005	134	200501	325	37	39
Survey	2007	94	200701	7	45	37
Survey	2003	134	200301	148	43	37
Survey	2001	94	200101	112	39	37

Rock Sole Unidentified

0.13

8,631

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Survey	1990	83	199001	62	42	32
Survey	1991	37	199101	260	45	30
Survey	1996	94	199601	65	44	28
Survey	1990	37	199001	137	42	26
Survey	1990	83	199001	63	47	26

Southern Rock Sole

0.15*

2,706

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Survey	2003	147	200301	62	44	28
Survey	2009	143	200901	113	46	28
Survey	2007	143	200701	16	38	28
Survey	2007	143	200701	28	36	28
Survey	2007	143	200701	160	56	28

Yellowfin Sole

0.11

28,122

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Observer	2005	A283	9869	291901	35	39
Survey	2009	88	200901	233	40	38
Observer	2002	A276	8033	140959	34	37
Survey	2006	134	200601	201	44	37
Survey	2005	88	200501	338	40	36

Rockfish

Blackspotted Rockfish

0.05*

1,009

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Survey	2009	94	200901	251	54	90
Survey	2008	94	200801	118	61	84
Survey	2006	147	200601	160	59	82
Survey	2008	94	200801	120	60	75
Survey	2008	94	200801	49	56	73

Dark Rockfish

0.06*

2,378

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Survey	2002	9999	200201	287	41	67
Survey	2002	9999	200201	346	42	67
Survey	2002	9999	200201	311	43	61
Survey	2001	9999	200101	297	43	60
Survey	1993	90	199301	11	47	59

Dusky Rockfish

0.05

7,150

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Observer	2004	A108	9222	232713	51	76
Observer	2008	A032	12057	412741	45	66
Observer	2008	P001	12091	477302	46	62
Survey	2003	147	200301	54	41	60
Survey	2007	147	200701	31	48	60

Harlequin Rockfish

0.09*

641

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Survey	1996	94	199601	106	28	47
Survey	1996	100	199601	106	27	41
Survey	1996	23	199601	150	34	41
Survey	1996	23	199601	152	33	37
Survey	1996	100	199601	69	29	37

Northern Rockfish

0.05

16,175

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Observer	2004	A068	9223	57763	41	88
Observer	2000	A110	6292	194	39	80
Observer	2004	A276	9251	220196	35	79
Observer	2003	A650	8742	179069	49	76
Survey	2006	147	200601	381	34	74

Pacific Ocean Perch

105

0.04

35,777

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Survey	2008	94	200801	398	43	105
Survey	2004	143	200401	907	39	104
Survey	2000	94	200001	426	39	100
Survey	2002	57	200202	162	43	98
Survey	1994	95	199401	479	40	93

Quillback Rockfish

0.06*

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Survey	2008	SE	200801	35	39.3	74
Survey	2007	999	999999	20071	42	71
Survey	2006	999	999999	200611	48	53
Survey	2007	999	999999	200711	38	47
Survey	2008	SE	200801	2	46	47

Redstripe Rockfish

0.12*

362

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Survey	1996	23	199601	100	36	36
Survey	1996	23	199601	90	35	35
Survey	1996	23	199601	34	35	35
Survey	1996	94	199601	63	35	33
Survey	1996	23	199601	63	39	30

Rougheye Rockfish

135

0.03

11,191

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Survey	2009	94	200901	485	64	135
Survey	1993	21	199309	15	60	132
Survey	1993	21	199309	17	54	130
Survey	1999	94	199901	614	59	129
Survey	1993	21	199309	8	58	121

Sharpchin Rockfish

0.09*

567

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Survey	1996	94	199601	159	35	48
Survey	1996	94	199601	182	29	48
Survey	1996	100	199601	177	27	43
Survey	1996	94	199601	36	28	39
Survey	1996	100	199601	244	36	39

Shortraker Rockfish

146

0.03*

2,909

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Survey	2003	143	200301	181	79	146
Survey	1996	23	199601	28	63	136
Survey	1996	23	199601	130	81	127
Survey	2006	143	200601	64	96	124
Survey	2005	134	200501	155	67	116

Roundfish

Arctic Cod

1.06*

1,205

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Survey	2008	148	200801	19	15	4
Survey	2008	148	200801	582	22	4
Survey	2008	148	200801	583	18	4
Survey	2008	148	200801	589	18	4
Survey	2008	148	200801	928	23	4

Atka Mackerel

0.30

27,944

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Observer	1994	A009	2797	145	46	14
Survey	2000	23	200001	276	44	14
Survey	2000	23	200001	5	48	14
Observer	1990	A047	442	85	45	13
Survey	2006	143	200601	298	44	13

Bigmouth Sculpin

0.18*

128

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Survey	2004	89	200401	6	75	23
Survey	2004	88	200401	36	65	21
Survey	2004	89	200401	19	68	20
Survey	2004	134	200401	92	62	20
Survey	2004	134	200401	104	76	20

Giant Grenadier

0.07*

1,140

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Survey	2006	96	200601	75	34	58
Survey	2004	96	200401	94	35	54
Survey	2002	57	200202	54	31	54
Survey	2002	57	200202	707	54	53
Survey	2002	57	200202	16	31	50

Great Sculpin

0.26*

397

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Survey	2005	88	200501	95	78	16
Survey	2005	89	200501	5	71	16
Survey	2005	89	200501	10	78	15
Survey	2005	88	200501	120	75	15
Survey	2005	88	200501	105	54	15

Pacific Cod

0.25

25,904

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Survey	2007	88	200701	729	91	17
Survey	2009	88	200901	624	102	14
Survey	2005	89	200501	248	96	14
Survey	2003	88	200301	500	89	14
Survey	2007	88	200701	177	108	14

Pacific Hake

0.17

49,728

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Survey	1995	21	199510	2733	47	25
Observer	1996	201		53	48	24
Observer	1997	A291	4458	197	60	24
Observer	1997	A291	4458	465	51	24
Observer	1995	CDFGCC	201	72	50	23

Plain Sculpin

0.26*

777

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Survey	2005	88	200501	121	47	16
Survey	2005	88	200501	167	54	15
Survey	2005	88	200501	168	54	15
Survey	2005	89	200501	159	40	15
Survey	2006	134	200601	227	60	15

Sablefish (black Cod)

0.04

45,569

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Survey	1989	523	198901	162	77	94
Observer	2009	A222	12718	458051	79	74
Observer	2003	A580	8324	161808	102	73
Survey	1993	518	199301	2738	96	70
Survey	2000	96	200001	73	70	69

Walleye Pollock

0.13

239,389

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Observer	1990	A055	209	326	58	31
Survey	2007	89	200701	365	57	29
Survey	1989	522	198901	33	52	27
Survey	1991	793	199103	706	79	26
Survey	1990	758	199001	109	58	26

Warty Sculpin

0.23*

682

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Survey	2004	89	200401	49	53	18
Survey	2006	88	200601	75	53	17
Survey	2004	88	200401	61	52	17
Survey	2005	88	200501	38	53	15
Survey	2003	89	200301	89	53	15

Yellow Irish Lord

0.15*

784

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Survey	2005	88	200501	60	43	28
Survey	2006	143	200601	316	45	26
Survey	2006	143	200601	234	47	24
Survey	2006	134	200601	3	49	24
Survey	2006	88	200601	28	45	24

Skates

Alaska Skate

0.21*

243

Collection Type	Year Collected	Vessel Code	Cruise	Specimen #	Length (cm)	Age
Survey	2007	88	200701	87	110	20
Survey	2007	88	200701	42	103	18
Survey	2007	88	200701	79	105	18
Survey	2007	88	200701	63	112	16
Survey	2007	88	200701	13	102	16

Data as of 2010

*Sample sizes are probably insufficient to establish max age and natural mortality rate estimates for these species.

  Before using any data from our website please read our disclaimer.

  Click on a fishes scientific name to see the five oldest samples. Click on it again to hide this information.

  Maximum age data is from ages generated between 1990 and 2010 except Pacific cod, which is limited to collections read after 2000.

  Natural mortality (M) is estimated using the method outlined by Hoenig (1983) (full article PDF) which uses maximum age to estimate instantaneous mortality.