Yes, all whales are fishes because they swim like fishes.
Blue whales are not herbivores. Instead, blue whales are carnivores. Blue whales diet consists of mainly Krill and Fish.
No, blue whales like eating krill and fish. Not humans. Blue whales are extremely marvellous animals though.
blue whales
Krill help whales by satisfying their appetite, and a type of fish called doctor fish help clean blue whales by eating the barnacles off whales skin.
like a big fish
killer whales eat fish where as blue whales eat mostly krill.
Bears, big fish, sharks, whales, people!, sea birds and blue-ringed octopi
Actually dolphins are marine mammals, not fish. As for whales, the blue whale is the largest animal ever (as far as we, humans, know). So whales are indeed rather large fish.
Penguins do not eat blue whales. They'd have to peck for hours only to get through the skin.
They Do Not Like Sugar They Only Like Fish
No. Blue whales are the largest living animal, both sea and land, but they aren't fish, they're mammals. They breathe with lungs, give live birth, suckle their young etc.
Most whales like humpback whales, sperm whales, and blue whales eat krill or plankton. Killer whales eat penguins, seals, or turtles.