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1.Ichthyology – the study of Fish
• 2. Classifica8on of fish – Kingdom Animalia
– Phylum Chordata – Subphylum Vertebrata
1. Class Agnatha-‐ jawless fish
• 2. examples: lamprey & hagfish • 2. traits • 3. round mouth with studded teeth
• 3. scaleless
• 3. collagen & car8lage skeleton-‐-‐-‐-‐ flexible
• 3. no paired fins
• 3. single nostril
Lamprey -‐ parasi8c
hMp://dsc.discovery.com/videos/nasty-‐by-‐nature-‐hag-‐fish-‐slime.htmlc
2. Class Chondrichthyes (car8lage skeleton fish) * examples: sharks, skates, rays
2. traits 3. Ampullae of Lorenzini detects electrical currents 3. lateral line for balance 3. placoid scales
3. replacable rows of teeth
3. oil filled liver for buoyancy
3. nic8ta8ng membrane
MEGALADON SHARK... OF MIOCENE PERIOD
3. internal fer8liza8on w/ claspers
2. Class Osteichthyes – bony fish
* gills w/ operculum
* countercurrent gas exchange
* some have scales/some not
* mucus protects from parasites
• Lateral line
• Swim bladder for buoyancy
1. Which fish drink water and why?
Is it the marine fish? Or the freshwater fish?
Closed note test over fish
• Know the parts of the fish from the fish images.
• Be able to match the terms of the fish to the func8on (job).