It's cheating.
Aside from breaking the law, and poaching, anyone who fishes in a marine reserve is a cheat.
They are bending the rules by reducing their margin of error, by shooting fish in a barrel.
It takes little skill other than pointing your boat and gun, sorry, rod, in the right direction.
The fisher and companion photographed inside the Poor Knight Islands marine reserve displayed a double dose of ignorance and arrogance.