«Predator numbers were severely depleted in heavily fished areas, while smaller prey fish such as damselfish, and herbivores such as parrotfish, had increased greatly in number having been released from predation.» (sciencedaily.com)
More fisheries are relying on smaller prey fish such as anchoveta - with more than 10.7 million metric tons pulled in, depriving seabirds and other marine animals of food (FAO «Ten Biggest Fisheries in the World» 2006) It seems that humanity's (treehugger.com)