Like any other fish sharks have gills for breathing, a backbone, and live in water. Unlike bony fish, sharks and their cousins the stingrays and skates have skeletons made of cartilage instead of bone. The only part of their body that is hard like bone is their teeth.

What is the difference between bony fish and cartilaginous fish?

This class includes Cartilaginous fishes and they are marine in nature. Their endoskeleton is made up of cartilage and notochord is persistent throughout life.
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Is a shark a non bony fish?

The Classification of Non-Bony Fish

From there the non-bony fishes can be divided into two classes: Class Agnatha (Jawless Fishes) and Class Chondrichthyes (sharks and rays.)

What differentiates the three main groups of fish from each other?

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.

How do you identify a bony fish?

Bony fishes share several distinguishing features: a skeleton of bone, scales, paired fins, one pair of gill openings, jaws, and paired nostrils. Osteichthyes includes the largest number of living species of all scientific classes of vertebrates, more than 28,000 species.

Which of these is an example of a bony fish?

Bony fishes have bony skeleton. The examples include These Tuna, Codfish, Salmon.

Is ROHU a bony fish?

Rohu is also a fish with a bony skeleton. It's four pairs of gills that are coated by plate on all sides. it's associate degree oversized omnivorous watercourse water fish.

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.

Which fish do not have bones?

Sharks don't have bones.

They are a special type of fish known as “elasmobranch,” which translates into fish made of cartilaginous tissues – the clear gristly stuff that your ears and nose tip are made of. This category also includes rays, sawfish, and skates.

Which fish does not have scales on their body?

Fishes that don't have scales include the clingfish, catfish and shark family, among others. Instead of scales, they have other layers of material over their skin. They can have bony plates that are also covered by another layer or tiny, teeth-like protrusions covering their skin.

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