How do most fish eat?
Overall, most fish need some meat in their diet, which they get from insects, worms, or smaller fish. Meanwhile, larger, carnivorous fish will primarily subsist on other fish, small mammals, or birds. Generally speaking, the larger the fish, the larger the prey it will target and consume.
How do fish eat with no teeth?
Jawless fish are the most primitive fishes living today. Jawless fish: Lack jaws. Feed by suction with the help of a round muscular mouth and rows of teeth.
What does fish eat in water?
Live fish food include earthworms, sludge worms, water fleas, bloodworms, and feeder fish. Food for larvae and young fish include infusoria (Protozoa and other microorganisms), newly hatched brine shrimp and microworms. These are the most preferred type of food for fishes, but are difficult to get.