Age in years No. Length in (cm) Weight in (g)
Length group Observed average length From back calculation Calculated from Von Bertlanffy's Calculated from increments summation Calculated from Von Bertlanffy's
I 52 21-35 29 27.5 28.4 167.46 184.3
II 76 30-44 38 37.2 37.8 421.21 441.5
III 45 40-50 46 46.1 45.8 805.38 790.2
IV 47 48-58 53 52.6 52.5 1205.61 1199.9
V 29 55-61 59 57.6 58.2 1596.56 1640.9
VI 39 58-66 63 62.4 63 2037.38 2088.9
VII 12 65-69 67 66.8 67 2505.50 2525.9
VIII 23 68-72 71 70.7 70.4 2969.82 2939.7
IX 8 72-74 74 73.7 73.3 3375.26 3322.8
X 1 ³75 75 76.4 75.8 3766.55 3671.3
Table 6: Ranges and means of empirical lengths and weights for B. docmac.