There are many species of larger fish that would eat Clown Fish if they could but the Clown fish lives its life in amongst the poisonous tentacles of a Sea anemone. This protects it from all predators.
No, Clown fish do not eat crackers
There are many types of clown fish. The one most commonly referred to is in the species A. ocellaris
Yes they are they can eat a baby clown fish
Of course it can. It can eat anything small enough to fit into its mouth that it wants to.
Clown fish are tropical marine species, they do not live in cold water.
no
cannibalism (i think that's term your looking for)
Yes, hammerheads do eat clown fish as well as other fish, squids, and octopus. Their favorite meals however are stingrays.
vertebrates
What do clown fish eat?
no probley not but it depens on the fish.
Clownfish are considered omnivores, because they eat meat and plants. They like to eat foods such as algae and plankton.