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Guide for identification of IOTC species

Albacore
(Thunnus alalunga)

Countable characteristics

D XIII~XIV -14~16 + 7~8
A 14~15 + 7~8
P1 31~34
P2 I, 5
GR 25~31

Distribution

Worldwide / Temperate and tropical area

Maximum size

FL　250 cm BW 210 kg

Notes

Example of Size (FL) and weight relationship

Following equation from Indian Ocean data, collected by Taiwanese gillnet fishery (Chien-Chung Hsu)

FL (cm)	BW (kg)
40	1.5
41	1.6
42	1.7
43	1.8
44	1.9
45	2
46	2.1
47	2.3
48	2.4
49	2.5
50	2.7
51	2.8
52	3
53	3.2
54	3.3
55	3.5
56	3.7
57	3.9
58	4
59	4.2
60	4.4
61	4.6
62	4.9
63	5.1
64	5.3
65	5.5
66	5.8
67	6
68	6.3
69	6.5
70	6.8
71	7.1
72	7.3
73	7.6
74	7.9
75	8.2
76	8.5
77	8.8
78	9.1
79	9.5
80	9.8
81	10.1
82	10.5
83	10.8
84	11.2
85	11.6
86	12
87	12.3
88	12.7
89	13.1
90	13.6
91	14
92	14.4
93	14.8
94	15.3
95	15.7
96	16.2
97	16.7
98	17.1
99	17.6
100	18.1
101	18.6
102	19.1
103	19.6
104	20.2
105	20.7
106	21.3
107	21.8
108	22.4
109	23
110	23.5
111	24.1
112	24.7
113	25.4
114	26
115	26.6
116	27.2
117	27.9
118	28.6
119	29.2
120	29.9

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