Marine Fish and Their Adaptations

What is the estimated number of fish species found in the oceans?

• 10,000

• 20,000

• 30,000

• 40,000

Which feature is common among all ray-finned fish?

• Soft elastic cartilage

• Gas-filled swim bladder

• Fleshy fins

• Circular teeth

How do lionfish use their dorsal fins?

• To crawl along the sea floor

• To glide through the air

• To attract prey with bioluminescence

• To inflict venomous stings

What adaptation allows flying fish to glide above water?

• Venomous spines

• Wing-like pectoral and pelvic fins

• Bioluminescent bacteria

• Stubby fins for crawling

Which fish uses bioluminescent bacteria to attract prey?

• Frogfish

• Lionfish

• Flying fish

• Anglerfish

What is unique about the coelacanth's fins?

• They contain venomous spines

• They are made of cartilage

• They resemble the limbs of land animals

• They are used for gliding

When was the coelacanth rediscovered?

• 1980

• 1965

• 1950

• 1938

What is the primary habitat of the coelacanth?

• Coral reefs

• Twilight zone of the ocean

• Freshwater lakes

• Open ocean

What sets bony fish apart from other fish groups?

• Lack of fins

• Presence of bone

• Circular teeth

• Presence of cartilage

What will the next video explore?

• Ray-finned fish

• Lobe-finned fish

• Cartilaginous fish

• Freshwater fish