Phylum Fish

Where does 70% of the worlds fish live?

• Pacific Ocean

• Southern Ocean

• Arctic Ocean

• Atlantic Ocean

Fish are invertebrates

• True

• False

Which group is also known as bony fish?

• Osteichthyes

• Agnatha

• Chondrichthyes

Fish have existed for about 530 years

• True

• False

Which category is Haikouichthys in?

• Chondricthyes

• Osteichthys

• Agnatha

Which fin is the most important?

• Pelvic fin

• Caudal fin

• Pectoral fin

• tail fin

How old was the oldest koi fish?

• 200 years old

• 199 years old

• 201 years old

• 20 year old

What organ do fish use to breathe?

• lungs

• heart

• gills

• brain

Are fish cold blooded or ectothermic?

• cold blooded

• ectothermic

• both

• none

Water flows over the fish's gills when it opens its mouth, allowing the blood in its ___________ to take up oxygen that has dissolved in the water.