As demonstrated in nemo, sword fish. Mostly any carnivorous creatures.
Humans eat fish
fish eats atta fish eats mummy
Rachael the Cow eats Exotic Fish
angler fish eats various sea fish. and monkfish eat angler fish
fish fish
i
the fish eats an array
A fish eats meat or plants, or both, depending on which type of fish it is. If a human eats a fish, it is not a vegetarian diet food.
The haren eats the cray fish
Seals and any other big animal eats cow fish.
sucker fish
it could be a shark