FISH

Bony fish have around__________ species.

• 4,200
• 380,000
• 26,000
• 300

What is the gas filled sac the controls buoyancy 

• bladder 
• swim bladder
• urinary bladder
• mesentry 

is a flexible lightweight material made of cells surrounded by tough fibers of protein 

• bone
• muscle
• cartilage
• Intestine

BONY FISH

• CHONDRICHTHYES
• AGNATHA
• OSTEICHTHYES

Fish with bodies of cartilage and scales.

• chondrichthyes
• osteichthyes
• agnatha

ANOTHER NAME FOR THE TAIL OF A FISH

• pectoral fin
• anal fin
• caudal fin

Many aquatic vertebrates have a lateral line. The purpose is to 

• sense blood in the water
• detect pressure and vibrations
• keep it swimming in a straight line

Claspers in sharks are used in the act of 

• mating
• swimming
• digestion

What fin is showing on this shark?

• dorsal
• pectoral
• caudal

What fin is most prized in shark fin soup?

• anal
• dorsal
• pectoral