Weigh Your Catch – Saltwater

The aim of the 'Weigh Your Catch' feature is to enable recreational anglers the opportunity to get an estimation of the average weight (in kg) of their catch using only the total length (in cm) of the fish.  These estimates are derived from the length-weight relationship, a scientific formula which is often used by fisheries scientists and is unique to each species.

To use this information all you need to do is:

1.  Identify the species of fish you have captured.

2. Measure the TOTAL LENGTH (TL) of the fish from the tip of the nose to the end of the tail.

3. Record the TL in centimetres (cm).

4. Use the scale to determine the average weight of the fish at length.

TL (cm) Snapper (kg) Kingfish (kg) Mulloway (kg)
45 1.13 0.90 1.00
46 1.20 0.96 1.06
47 1.28 1.02 1.13
48 1.36 1.08 1.19
49 1.44 1.15 1.26
50 1.53 1.22 1.33
51 1.61 1.29 1.41
52 1.71 1.36 1.48
53 1.80 1.44 1.56
54 1.90 1.52 1.64
55 2.01 1.60 1.73
56 2.11 1.69 1.82
57 2.22 1.77 1.90
58 2.34 1.87 2.00
59 2.45 1.96 2.09
60 2.58 2.06 2.19
61 2.70 2.16 2.29
62 2.83 2.26 2.39
63 2.96 2.37 2.50
64 3.10 2.48 2.61
65 3.24 2.59 2.72
66 3.39 2.71 2.84
67 3.54 2.82 2.95
68 3.69 2.95 3.08
69 3.85 3.07 3.20
70 4.01 3.20 3.33
71 4.18 3.34 3.46
72 4.35 3.47 3.59
73 4.53 3.61 3.73
74 4.71 3.76 3.87
75 4.89 3.91 4.01
76 5.08 4.06 4.16
77 5.28 4.21 4.31
78 5.47 4.37 4.47
79 5.68 4.54 4.62
80 5.89 4.70 4.78
81 6.10 4.87 4.95
82 6.32 5.05 5.12
83 6.54 5.23 5.29
84 6.77 5.41 5.46
85 7.01 5.60 5.64
86 7.25 5.79 5.82
87 7.49 5.99 6.01
88 7.74 6.19 6.20
89 8.00 6.39 6.39
90 8.26 6.60 6.59
91 8.53 6.81 6.79
92 8.80 7.03 6.99
93 9.08 7.25 7.20
94 9.36 7.48 7.41
95 9.65 7.71 7.63
96 9.94 7.95 7.85
97 10.24 8.19 8.08
98 10.55 8.43 8.30
99 10.86 8.68 8.54
100 11.18 8.94 8.77
101 11.50 9.20 9.01
102 11.83 9.46 9.26
103 12.17 9.73 9.51
104 12.51 10.00 9.76
105 12.86 10.28 10.02
106 13.22 10.57 10.28
107 13.58 10.86 10.54
108 13.95 11.15 10.81
109 14.32 11.45 11.09
110 14.70 11.75 11.37
111 12.06 11.65
112 12.38 11.94
113 12.70 12.23
114 13.03 12.52
115 13.36 12.83
116 13.69 13.13
117 14.04 13.44
118 14.38 13.75
119 14.74 14.07
120 15.10 14.40
121 15.46 14.73
122 15.83 15.06
123 16.21 15.40
124 16.59 15.74
125 16.98 16.09
126 17.37 16.44
127 17.77 16.80
128 18.17 17.16
129 18.59 17.52
130 19.00 17.90
131 19.43 18.27
132 19.86 18.65
133 20.29 19.04
134 20.73 19.43
135 21.18 19.83
136 21.64 20.23
137 22.10 20.64
138 22.56 21.05
139 23.04 21.47
140 23.52 21.89
141 24.00 22.32
142 24.50 22.75
143 25.00 23.19
144 25.50 23.63
145 26.01 24.08
146 26.53 24.53
147 27.06 24.99
148 27.59 25.46
149 28.13 25.93
150 28.68 26.40
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