Readers ask: Which Of The Following Is Not One Of The Three Major Groups Of Fish In The Sea?

What are the 3 main groups of fish?

Fishes are typically divided into three groups: superclass Agnatha (jawless fishes ), class Chondrichthyes (cartilaginous fishes ), and superclass Osteichthyes (bony fishes ).

What are the three main characteristics of the three major groups of fishes?

Scientists group fish into three main types. They are divided into these groups because of the structure of their mouths and the types of skeletons they have. There are jawless fishes, cartilaginous (cart uhl AJ uh nuhs) fishes, and bony fishes. All three types are “cold-blooded,” or ectotherms.

In which of the 3 fish groups would sharks be placed?

The sharks, rays, and chimaeras make up the second group of fish, the Class Chondrichthyes. Sharks are one of the earliest known jawed fishes. They have an upper and lower jaw made of cartilage. You and I have two sets of teeth while a shark has an unlimited supply of teeth.

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What are the main characteristics of the three major groups of fishes quizlet?

The major groups of fishes are jawless fish bony fish and cartilaginous fish. jawless fish have no scales and no jaws. cartilaginous have jaws and scales and there skeleton is made of cartilage. What is the structure of a fin?

What separates sharks from other fish?

But how is a shark different from other kinds of fish? Most other fish have skeletons made of bone. A shark’s skeleton is made of cartilage, a type of strong but flexible tissue. Most other fish are covered in smooth, flat scales.

What is a flock of fish called?

The most common collective nouns for a group of fish in general are school and shoal. Both the words have evolved from the same common Dutch root ‘schole’ meaning a troop or crowd.

What is the largest group of fish?

Bony fish (also known as Ray-finned fish ) are the largest of the three groups of fish with almost 27,000 species such as salmon, trout, lanternfish, cavefish, cods, anglerfish, tarpon, herrings, electric eels and many more. Bony fish have a skeleton made of bone.

What is the most common group of fish?

‘ Bony fishes are the most diverse of all groups of fishes and are also the most diverse group of vertebrates alive today, with approximately 29,000 living species. Bony fishes include two subgroups—the ray-finned fishes and the lobe-finned fishes.

What are the five classes of fish?

There are about 28,000 existing species of fish, and they are placed in five classes: hagfish, lampreys, cartilaginous fish, ray-finned bony fish, and lobe-finned bony fish.

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Why are sharks cartilaginous fish?

Cartilaginous skeleton Sharks, rays, skates, and chimaeras (also know as rat fishes ) all have cartilaginous skeletons. Cartilage is less dense than bone, allowing sharks to move quickly through the water without using too much energy.

What are the two classes of jawless fish?

There are two categories of jawless fish: hagfish and lampreys.

What is the largest living shark?

The largest is the whale shark, which has been known to get as large as 18 meters (60 feet). The smallest fits in your hand. And the great white shark is somewhere in the middle.

Where do fish most commonly live?

Nearly half of all fish species live in fresh water, which means they swim in the rivers, lakes, and wetlands that make up less than 3 percent of Earth’s water supply. There are more than 800 known freshwater fish species in North America alone.

What are the main characteristics of fishes quizlet?

What characteristics do fishes share with all other vertebrates? A backbone/notochord, closed circulatory system, slits in the throat area, nerve cord along the back. Where does oxygen get into the blood of a fish? As water flows the gills, oxygen moves from the water into fishes ‘ blood.

Why are amphibians named with a word that means double life?

Amphibia: Life History and Ecology The name amphibian means ” double life “, and is given to members of this group for the double life that they lead. For while adult amphibians usually live on land, their soft eggs must be laid in the water. The eggs shown at left have just been shed by the female.

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