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Chondrichthyes
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How do they breath?
With the use of gills
Sharks: Any fish that's smaller
Rays: sea worms/shrimp
Skates: smaller foods, same as rays
Live in freshwater
Chondrichthyes
Reproduction
Works Cited
Fertilization happens internally with females and with a male. The male shark has "claspers," extensions of the pelvic fins that are used to transfer sperm to the female and fertilize her eggs.
“Chondrichthyes Medical Definition.” Merriam-Webster, Merriam-Webster, www.merriam-webster.com/medical/Chondrichthyes.
Class Chondricthyes, www.comfsm.fm/~brianl/chondrichthyes.html.
Claspers are the main sexual reproductive organs in Chondrichthyes
Introduction to the Chondrichthyes, www.ucmp.berkeley.edu/vertebrates/basalfish/chondrintro.html.
Characteritics and Skin
Are the tiny tough scales that cover the skin of sharks, rays, and other chondrichthyes.
Tooth like placoid scales.
For fast swimming
Tough protective body covering
Made of skeleton and cartilage