I have a habbit of now measuring all my fish before release and after kill, and from records kept we can estimate how heavy the fish is by its short length,from 8kg snapper,150kg marlin and 50,60,70,80 kilo tuna, because we still talk in kilograms not centimetres.If you did get an accurate measurement of the fish, usually you can estimate the weight of the fish to within afew kilos.If you did post back and we can work out a weight.
Looks like a nice fat one, good effort,top fish on 15.