FishMiranda Miller

Gabreal PreisendorferPeriod 3

General InformationFish are water

dwelling creaturesFish are vertebrates

and breathe using gills

There are more than 24,000 species of fish

Fish first appeared 500 million years ago

CharacteristicsBony fish have bony

skeletons.Rays and sharks have

skeletons made of cartilage

All fish have a complete digestive tract that includes a mouth, anus, and a digestive system with specialized organs

Sexual reproduction, mostly external fertilization

Bony FishPhylum Name-

OsteichthyesHave glands that

secrete mucus to glide through the water

Types: Ray finned, Lob finned, and Lung fish

Have swim bladder to help them keep afloat

Bony Fish con’tMost are egg layersCan become sexually

mature at different ages depending on the species

Fertilization can be internal or external

Sharks and RaysPhylum name-

ChondrichthyesSharks

Have rows of sensory organs running along each side of the body (lateral line)

Must swim constantly to avoid sinking (no swim bladder)

Swift swimmers

Sharks and Rays con’tMade of powerful

muscle and cartilage

They digest food by using there teeth to tear and crush food

RaysScoop food up with

there mouths along the ocean floor

Bottom dwellers

Sharks and Rays con’tThey feed by using

there jaws to crush mollusks

Tails are whip-likePoison spines that

function for ocean defense

Examples of FishClown fishTunaSting raysEelsTroutCarpsalmon

http://animals.nationalgeographic.com/animals

http://www.buschgardens.org/infobooks/BonyFish/anatomy.html

http://www.elasmodiver.com/

Work cited