Growth parameters for Acanthurus tractus
 
Maximum Length 38.1cm SL
n = 16
Note that studies where Loo is very different (+/- 1/3) from Lmax are doubtful.
Longevity vs 3/K graph [n = 4]
ø = 2.48
L inf = 16.2 cm SL
K = 1.2
Median record no. 9
118236Ref. 118236
Loo
(cm)
Length Type K
(1/y)
to
(years)
Sex M
(1/y)
Temp° C Lm Ø' Country Locality Questionable Captive
12.9 SL 1.140 27.6 2.27 Barbados Barbados Yes No
13.4 SL 1.360 27.1 2.39 Venezuela Los Roques Yes No
13.8 SL 0.670 28.1 2.11 Belize Carrie Bow Cay (outer reefs) Yes No
14.3 SL 1.430 27.1 2.47 Venezuela Las Aves Yes No
14.6 SL 2.100 25.0 2.65 Panama San Blas Yes No
14.8 SL 1.584 2.54 Panama San Blas (9°N, southwestern Caribbean) No No
15.3 SL 1.260 26.9 2.47 Bahamas Lee Stocking I. Yes No
15.6 SL 0.985 2.38 Bahamas Lee Stocking Is. No No
16.2 SL 1.150 22.9 2.48 Bermuda Castle Harbour lagoon Yes No
16.3 SL 1.170 28.1 2.49 Belize Carrie Bow Cay (inner reefs) Yes No
17.2 SL 0.630 22.9 2.27 Bermuda Bermuda (outer reefs) Yes No
17.5 SL 1.220 26.0 2.57 Ascension I. Ascension I. Yes No
17.6 SL 1.061 2.52 Ascension I. Ascension Is. (8°S) No No
18.8 SL 1.400 22.6 2.70 St Helena St. Helena I. Yes No
18.9 SL 1.241 2.65 St Helena St. Helena Is. (16?S) No No
24.6 FL 0.383 28.5 2.37 Virgin Is. (US) No No
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