2. Chapter 8 Marine Fish (Pg. 151)

3. Phylum: Chordata Animals with a brain & spinal cord

4. Subphylum: Vertebrata Animals with a backbone or endoskeleton

6. Jawless Fish Class: Agnatha -most primitive fishes

7. Characteristics Jawless Have cartilage Sucking mouth Elongated body like eels Gill slits Meaty fins Do not need air

9. Examples Lamprey Eel Hagfish

10. Cartilaginous Fish Class Chondrichthyes -sharks, rays, skates, ratfishes

11. Characteristics Have cartilage = skin that is lighter & more flexible than bone Gill slits Ventral mouth (underneath head) Meaty fins Do not need air Placoid scales = pointed like teeth

13. Shark Facts Shark meat is eaten around the world Fished for oil Shark skin used for leather called “shagreen” & sandpaper Fins used for soup: has led to overfishing of sharks and a ban on shark finning

14. Why Sharks are Important Some sharks are filter feeders & feed on plankton Balance ecosystems by feeding on small prey that would otherwise take over

15. Rays and Skates Stingrays: Some live on the bottom = “demersal” Pectoral, wing-like fins Have whip-like tail with stinging, poisonous spines Electric rays can deliver shocks up to 200 volts (original shock therapy used by Greeks) Skates: Similar to rays in appearance Lack tail

16. A) Yellow stingray B) Manta Ray

17. Elephant Fish - Type of Ratfish