FSH should get a Dynamite ability at 100 that produces a random number of fish at that location, further randomized by % of which fish are gained based on the difficulties/number of fish types/etc, and will fill log entries but none of the fish give a size score, none are collectable, they can't be sold on the MB, and none can be used in aquariums or imprinted on canvases. Probably the easiest way would be to assign them a new flag like collectable, but call it "blasted" instead.