Earlier quoted context omitted.
Can you explain the causal link between those rich people's greed and this fishing technique? Is it because rich people enabled dynamite to be produced cheaply enough for them?
It's because "richness" creates a pathologically competitive social system that encourages this sort of destruction activity in order to get the token that conveys value.
I have. Forbid poor people from becoming rich. By keeping them in fixed economic classes, they won't have the motivation to compete so hard and then the fish will be saved. There are obvious bad side effects of this. Can you improve on it?