1. Fish
© 2009 Susan Anderson

2. Characteristics of Fish
Vertebrates (has a backbone)
Gills
Scales
Fins
Ectotherms (cold-blooded)
Aquatic (live in the water)

3. Types of Fish Agnatha / Jawless Chondrichthyes / Cartilage
Hagfish, Lampreys
Chondrichthyes / Cartilage
Sharks, Rays
Always on the move (no operculum)
Carnivores
Osteichthyes / Bony
Perch, Bass, Catfish
Swim bladders/ buoyancy
95% of all fish

4. Fins / Movement

5. Obtaining Oxygen Use gills Water enters mouth
Passes over gills (which allows oxygen to enter the blood stream and carbon dioxide to leave the blood)
Water leaves through gill slits
Blood circulates from gills to body to heart to gills.