Ah, that makes sense. The way you used the figure though was presented, or at least interpreted, as 15.5kg being one of the biggest Steenbras to be caught - not exactly true.
As for treknetting, it makes my stomach turn too. These nets are indiscriminate and that 5 tons of bycatch allowed will include steenbras of all sizes. Juveniles will not escape a pilchard net, they will die as well.
Surely a matter like this needs to be addressed as a matter of urgency when such strict measures are put in place on recreational fishing activities which have much less impact on the fish stocks... Do the people responsible have brains, or what is their case?