Why, do you think, do fishers converge to a fishery when a new fish becomes popular?

Question

Please answer yhis question in the best way you can.

Answer 1

so they can catch the new, popular, fish

Answer 2

Sometimes fishing is best when new fisheries (i.e. a stocked resevoir) are started because there is an abundance of nutrients for the fish to utilize right away. This can lead to lots of big fish until things level out and the nutrients get used up. High numbers of big fish attract fishermen.

Other situations can be due to the fact that there are just simply fads sometimes. An "other people do it so its cool and I want to do it" type of deal.