Fish How Do Fish Hunt Predation where one

Fish

How Do Fish Hunt?

Predation: where one fish preys on another • Active predation: the active pursuit of a prey item • Passive predation: the fish will lie and wait for its prey • Predators usually have teeth, though not all do

Grazers • Fish that go around and take small bites of algae or like food • Typically take small bites here or there before moving to a new spot

Straining • Fish that actively swim around, usually with their mouths open, and take small prey items from the water column. • Some of these small prey items can be plankton or eggs for example • These fish don’t have teeth

Suction • A method of feeding where the prey item is taken into the predators mouth via suction, like a vacuum cleaner

Parasitism • Where fish depend on another fish food. • There is no benefit to the other “prey” fish

Types of Fish

Jawless Fish • Fish that have no jaw • Only 2 groups live today; Lamprey and Hag fish

Cartilaginous Fish • Fish who’s bodies are made up of Cartilage • Cartilage allows these fish to get to larger sizes then their bony counter parts, this is because cartilage continues to grow as the animal ages

Bony Fish • Fish that have a bony Skeleton, there are 2 sub-categories • Ray-Finned fish: Several bones that stick out with webs of skin • Lob-Finned fish: a single bone attached to the body, no webbed skin. Only 2 groups still live today; coelacanths and lung fish.

What Can Fish Eat? • • Plankton Jellyfish Other fish Mollusks Crustaceans Birds Mammals And much more….