Containing around 17,000 different species, jawed fish are the largest group of vertebrates in the animal kingdom. But even that huge number doesn't account for all fish species in fresh water and saltwater. Because there are so many types of fish, mstart quiz
Question 2 of 11
What feature sets fish apart from other water-dwelling animals?
... Other animals that live in water, such as frogs in the tadpole stage, also have gills and backbones, but fish are the only backboned animals with two-chambered hearts.
Question 3 of 11
What's the proper term for the study of fish?
... The study of fish is called ichthyology, from the Greek words for "fish" and "discourse."
Question 4 of 11
Which of the following is true about fish scales?
... As fish age, their scales grow larger in size.
Question 5 of 11
Which part of a fish's body does not help enhance its hearing?
... The cells of the lateral line are connected to a nerve, deep in the body, that leads to the acoustico-lateralis area of the brain. In some fish, the gas bladder serves as a resonator that aids in hearing.
Question 6 of 11
What is the largest fish?
... The largest fish is the whale shark, which is estimated to reach a length of 60 feet (18 meters) or more.
Question 7 of 11
What is the fastest fish in the ocean?
... The sailfish is the fastest fish in the ocean, cruising at speeds of up to 68 mph (109 kph).
Question 8 of 11
Which fish has the longest migration route?
... Probably the most remarkable of all fish migrations is that of the European eel, which travels about 3,000 miles (4,828 kilometers) to spawn in the Sargasso Sea in the North Atlantic Ocean. These eels accomplish the journey in about three years.
Question 9 of 11
What's the main difference between the shark's class of fish and other fish classes?
... Sharks, skates and rays belong to the chondrichthyes class of fish. These fish have no bones; their skeletons are made of cartilage.
Question 10 of 11
What type of "fish" was a recent household fad in the United States?
... Robotic singing fish, such as Big Mouth Billy Bass, were popular gag gifts in recent years.
Question 11 of 11
How far can flying fish glide in the air?
... Flying fish can glide in the air as far as 20 feet (6 meters) or more if there's a tailwind.