commercial harvesting from the ocean has caused populations of large predatory fish to decrease
oceans has not fish catching_fish is harvesting_aquatic_animals. reef_triggerfish is fish. pilot_fish is not fish. catching_fish is not harvesting_aquatic_animals. harvesting_lobster is not harvesting_aquatic_animals. reef_triggerfish is not fish. reef_fish is not fish. oceans has fish sharks is carnivorous_fish.