yes
depending on the type of dolphin, a bottlenosed dolphin tends to feed on smaller fish than them also a spotted dolphin, atlatic dolphin, spinner dolphin ext, but a orca (killer whale) is a dolphin that feeds on other dolphins such as those listed abover or larger marine animals.
Whales eat krill and other fish. Fish eat other fish, depending on what type of fish it is.
There are fish that do eat them, but not ALL fish eat them.
no they eat dead fish no they eat dead fish
yes a fish can eat a fish for example many bigger fish eat bottom eaters.
No some fish eat smaller fish which eat even smaller fish
tooth fish eat people tooth fish eat people tooth fish eat people
It would depend upon the size of the fish. Small fish probably eat plankton. Larger fish eat smaller fish. Some fish eat invertebrates.
they do not eat fish
Yes. fish eat.
Large fish sometimes eat smaller fish or they will eat algae