In actual fact, do whales eat fish?
Some of them eat small fish, but not all.
Whales usually eat krill
Baleen whales eat krill, small fish, and similar sea creatures; toothed whales (orcas, sperm whales, etc.) eat fish (and squid, and sea lions, and...).
hula instead of anakula also fits here?
"Whales eat fish" is not correct. Why?