Not just humans - but bears, birds (gulls, eagles etc), and the bigger fish in the sea - the list goes on. Consumption of fish certainly hasn't appeared to have changed them over time - one wonders why it apparently did so for the apes? And you have to wonder who those particular apes were and boy the stories they'd have to tell after their transition from ape to human with a fish diet. Though they must have been pretty disappointed to discover their decreasing ability to swing from the trees.