What is the difference between elasmobranch and teleost?

It shows that the main difference between the two groups is in their offspring size strategy: teleosts make small offspring; elasmobranchs make large offspring.

Why is it called Elasmobranch?

The term elasmobranch refers to the sharks, rays, and skates, which are cartilaginous fishes. These animals have a skeleton made of cartilage, rather than bone. These animals are collectively referred to as elasmobranchs because they are in the Class Elasmobranchii.

Do cartilaginous fish live in freshwater?

Chondrichthyes. The class Chondrichthyes consists of the cartilaginous fishes, including sharks, batoids (rays, skates, guitarfish, and sawfishes), and chimaeras, or ratfishes. A diverse group comprising more than 700 species, Chondrichthyans are found throughout the world’s oceans and in some freshwater environments.

What is meant by Elasmobranch?

Definition of elasmobranch : any of a subclass (Elasmobranchii) of cartilaginous fishes that have five to seven lateral to ventral gill openings on each side and that comprise the sharks, rays, skates, and extinct related fishes.

Are osteichthyes cartilaginous fish?

From this category, fishes are classified as either osteichthyes or chondrichthyes (bony fish or cartilaginous fish).

Are trout Teleosts?

Teleosts including the brown trout and the scaly osman are found in mountain lakes in Kashmir at altitudes as high as 3,819 m (12,530 ft).

Where are elasmobranch found?

These fish are widely distributed in tropical and temperate waters. Many fish maintain buoyancy with swim bladders.

What are the most primitive fish?

Jawless fish
Jawless fish are the most primitive fishes living today. Jawless fish: Lack jaws. Feed by suction with the help of a round muscular mouth and rows of teeth.

Which fish is cartilaginous fish?

Cartilaginous fish are fish that have a skeleton made of cartilage, rather than bone. All sharks, skates, and rays (e.g., the southern stingray) are cartilaginous fish. These fish all fall into the group of fish called the elasmobranchs.

What kind of fish are cartilaginous?

Cartilaginous fishes (chondrichthyes) represent the oldest surviving jawed vertebrates and, as the name suggests, have a skeleton made out of cartilage. They include sharks, rays, and skates (elasmobranchii) and chimeras (holocephali).

Is Dogfish a fish?

dogfish, (order Squaliformes), any of several small sharks making up an order of chondrichthyian fishes composed of the families Centrophoridae (gulper sharks), Dalatiidae, Echinorhinidae, Etmopteridae, Oxynotidae, Somniosidae, and Squalidae. In North America the name is also used for a freshwater fish, the bowfin.

https://www.youtube.com/watch?v=Lwi3s9scmsA