Which time period is nicknamed the "Age of Fishes"?

SELECT TWO: The two organs that allow fish to sense vibrations and bioelectric fields in the water are _________ and ___________

All fish have the following except...

SELECT ALL THAT APPLY: Which of the following are true of fish adaptations?

What is the biggest difference between rays and skates?

Sharks must continue swimming to breathe due to lack of what structure?

SELECT ALL THAT APPLY: Which of the following terms correctly describes the thermoregulation (temperature control) that fish use?

Class _______ includes the cartilaginous fish

Class _______ includes the lampreys

Class _______ includes the bony fish (96% of all fish species)

Class _______ includes the hagfish

________ support gas exchange, fanning out in the water for maximum surface area

________ maintain vertical position and buoyancy in the water

________ protect the fish's body

________ used for propulsion, steering and balancing

________ pump water over the gills

The __________ is the most invasive fish species in the world

Which class of fish has a bony skeleton?

Which class of fish has homocercal caudal fins/superficially symmetric fins?

Which class of fish has no maternal care after young are born?

Which class of fish has a cartilaginous skeleton?

Which class of fish has external fertilization?

Which class of fish has internal fertilization?

Which class of fish has to keep swimming to breathe?

Which class of fish has placoid scales?

Which class of fish stores lipids in the liver for buoyancy?

Which class of fish secretes antiseptic mucus to protect themselves from disease?

Which class of fish stores gases in the swim bladder for buoyancy?

Which class of fish has heterocercal caudal fins in which the top portion is longer than the bottom?

Which class of fish has cycloid, ctenoid or ganoid scales?

Why are fish considered important to the oceans?