Sharks
What kind of skeleton do sharks have?
Cartilaginous.
What is the best way to tell sharks and rays apart?
Gills are on the sides of sharks and on the belly for rays.
Shark skeletons are made of cartilage. Fish skeletons are made of bone.
Define lateral line:
What are the two jawless fish?
Lampreys and Hagfish.
What are the name of the organs that male sharks have?
Claspers.
Which group of ray finned fishes is the most diverse group of vertebrats?
The teleostei group.
These are two differences between sharks and fish
Swim bladder, operculum, rayed fins...
Define osmoregulation:
How fish regulate an internal balance of salt and water in their bodies.
What does the caudal fin shape determine on a fish?
What does the Ampullae of Lorenzini do?
It detects electrical impulses.
What does the swim bladder of a fish do?
Helps keep the fish buoyant.
What is the difference between shark and fish gill coverings?
Sharks have gill slits. Fish have operculums.
When fish swim together in coordinated body positions and synchronized movements.
Which group of fish is closest related to humans?
Lobed-finned fishes.
What are the three main groups of cartilaginous fish?
Sharks, Rays, and Chimeras.
What is the name of the shape of the fastest fish caudal fin?
Lunate fin.
What is an environmental importance of both sharks and fish?
Moving nutrients around in the food chain.
A creature that lays eggs.
What fish was thought to have gone extinct 65 million years ago, but is alive and well today?
The Coelacanth.
Why do people eat shark fin soup?
To show off wealth.
What are ray-finned fish fins made out of?
Thin bony rays covered by skin.
What is an economic importance of both sharks AND fish?
Meat for food, aquarium pets, and recreational activities such as fishing and scuba diving.
Define peduncle:
The tail area that connects the caudal fin to the body.
Which ocean dwelling fish is a keystone species for certain river forests?
The salmon.