Tuesday, February 2, 2010

Fishes

WELCOME!!

Marine fishes can be found from the surface waters of the ocean to its deepest trenches. their species outnumber all other vertebrate species combined. They display an amazing array of adaptations that allow them to exploit virtually every niche. Fish are commercially important for human food, fertilizer, and other products.


Hagfish and lampreys are jawless fishes.









Hagfish

Lamprey attatched to fish






Sharks, skates and rays have skeletons composed of cartilage.







Sharks have streamlined bodies and highly developed senses that help them to be efficent predators







Most marine fishes have skeletons composed primarily of bone.


The shape of the fish's body is primarily determined by the characteristics of its environment.



Many fishes exhibit coloration and color patterns that help them blend in with their envionrment .


http://www.youtube.com/watch?v=HSPptPhbFVc This video shows examples how fish use camoflauge to their advantage.


Bony fishes exploit virtually every food resource available in the marine enviornment.


Most bony fishes have a swim bladder that helps them maintain neutal buoyancy in the water column.




"Sea" you real soon!!

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