According to the article these fish are sold locally, with obvious damage from the blasts to their internal organs. So it's not the reason fish is cheap in Western countries. AFAIK cheap fish mostly comes from farms.

    > Otherwise how would people have cheap fish?

Cast a net or eat tempeh. It being convenient doesn’t mean it’s the only way to do it.

> Otherwise how would people have cheap fish?

Fish farming?

> While fishers predominantly use the method to catch fish for sale at local markets