"Evil Fish"
Yet these fish are only "nasty" to their peers.
Compared to our modern deep-trawl nets thes fish are ineffectual, and we sweep them out of the oceans as we swept Cod and other formerly-prolific shallow-water fish.
What happens when we reach the bottom of the Marianas trench and there is no "new frontier" and every fish species in the ocean has been fished to the point of endangerment, or even extinction?
What next?
Soylent Green?