2. Aquarium Fish ~8 million households have pet fish in US ~1-10% marine fish captive bred – Rest wild caught from coral reefs Aquatic vertebrates, usually covered in scales, have fins, and have gills for respiration

3. Scales Size Lack of scales Deciduous

4. Scales Growth rings – Temperate areas – Stress – Age estimate

5. Muscle 40-60% of fish muscle used in movement White – Low Myoglobin, O 2 – Anaerobic, fast, short duration Red – High myoglobin, O 2 – Aerobic, sustained Pink

7. Muscle Arranged in “W” segments

8. Gills Circulation – Heart  Gills  Body  Heart Ammonia excretion

9. Common Aquarium Fish 1.Tropical freshwater – 1 O Guppies, mollies Livebearers, prolific – 2 O Egg layers Bettas, paradise fish, catfish, angelfish, oscars Active, can be aggressive

10. Common Aquarium Fish 2.Cool, freshwater – Goldfish, Koi – Hearty – Aquarium, pond 3.Tropical, marine – Clownfish – Increasing in popularity – Challenging – Sources of fish

11. Tropical Marine Fish Most wild caught – How? – http://www.youtube.com/wa tch?v=MtMs_6Z_jTE http://www.youtube.com/wa tch?v=MtMs_6Z_jTE – Stressed Space Parasites Specialized diet Rule of thumb to avoid aggression – Only have 1 fish of each color, color pattern and shape – Avoid large differences in size

12. Tropical Marine Fish Top species options – Anemone fish – Damsel fish – Angel fish – Gobies – Wrasses – Parrot fish – Butterfly fish

13. Assignment Create your dream aquarium https://www.youtub e.com/watch?v=kke 9LJ0sWKU https://www.youtub e.com/watch?v=kke 9LJ0sWKU