FishBy: Olivia, Shannon, and Danielle

I’m not really a fish

I’m not really a fish either!

Characteristicsdorsal fin

Lateral line

eye spines

anus

tail fin Ventral fin

pectoral fin

pelvic finnostrilmouth

operculum

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CharacteristicsMouth: takes in food and allows a stream of water over the gills

Nostril: a blindly ending sac with organs of smell

Operculum: covers and protects gills and lets water escape from them

Pectoral and Pelvic Fins: help to steer and stabilize fish

Lateral Line: a tube running the length of the body just below the skin

Dorsal and Ventral Fins: reduce rolling motion during swimming and help in turning movements

Tail Fin: imparts final thrust in swimming movements

Eye: it is the fishes point of vision

Spines: the primary structural framework upon which the fishes body is built

Body plan is: bilateral

HabitatAll fish have different ways to adapt to their environment and their surroundings around them.

Fish live in oceans, streams, lakes, pond, and rivers.

SpeciesThere are over a 4482 kinds of species, that we know of.

Body SystemDigestive

What do they eat?

• plankton

• other fish (teeth)

• algae

• insects

• worms

How do they get their food?

• take it off the sand or eat particles floating in the water

• some are predators and lay on the ocean floor until their food comes

Body SystemRespiratory

What is the Operculum?

What are the structure of the gills?

Made up of tiny threadlike filaments. When fish opens mouth, water rushes in and oxygen is pulled out through the blood vessels.

gill cover

Body SystemCirculatory

The closed circulatory system.

Heart chambers and functions.

Atrium – collects blood and pumps into the ventricle

Ventricle – contracts and pumps the blood into a small stretchable unit called the conus

Blood is pumped from the heart to the gills, where it receives oxygen and gets rid of carbon dioxide. Blood then moves on to the organs of the body, where nutrients, gases, and wastes are exchanged. However, there is no division of the circulation between the respiratory organs and the rest of the body. That is, the blood travels in a circuit which takes blood from heart to gills to organs and back to the heart to start its journey again.

Body SystemExcretory

Waste?Fish produce waste with ammonia and carbon

dioxide.

How are the waste eliminated?These waste are released out of the anus.

Kidneys?functions to maintain proper water and electrolyte balance , regulate acid base concentration , and filter the blood balance, acid-concentration of metabolic wastes , which are then excreted as urine wastes.

Body SystemResponse / Nervous

Nervous and Response organs….

What is the lateral line system?

lateral lines and eyes

a line of pressure sensors running along each side of the fish that pick up pressure waves in

water.How is body temp. regulated?

Fish vary with the temperature of their surroundings. The temperature of cold-blooded animals is always

maintained slightly below the outside temperature to prevent the loss of body moisture through evaporation

Body SystemSkeletal / Muscular

(movement)Cartilage – flexible tissue structures some of the body

Bones – not flexible and structures the bodyStructure and Function of scales….

The scales overlap and so form a protective flexible armor capable of withstanding blows and bumping. They are also covered with mucus to help prevent infection.

swim bladder - is located in the body cavity. It contains gas (usually oxygen) and functions as a

ballast organ, enabling the fish to maintain its depth without floating upward or sinking. It also serves as a

resonating chamber to produce sound.

ReproductionOviparous

Hatch from eggs

Embryo that develops inside body of the female to get nourishment

Produce egg but remains in mother until ready to hatch

Viviparous

Ovoviviparous

GroupsAgnatha

Chondrichthyes

Osteichthyes

Cartilaginous Fish (no bones)

Jawless Fish

Boney Fish (cartilage and bones)

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Importance

•help cardiac patients

•Food

•Makes veins flexible

•Source of nutrients

•Cleans up the algae

Humans Ecosystem

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I AM NOT A FISH!!

THE END

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