Cartilaginous fish such as sharks, skates, and rays are vertebrates, whose internal skeleton is made entirely of cartilage and contains no ossified bone. Cartilaginous fish are also known as Chondrichthyes and have one or two dorsal fins, a caudal fin, an anal fin, and ventral fins which are supported by girdles of the internal skeleton.
Cartilaginous fish have cartilaginous endoskeletons, meaning their skeletons are made from cartilage. Cartilaginous fish can also have placoid scales, or they are naked. Cartilaginous fish have gills, paired appendages, strong jaws, notochords, a dorsal nerve chord that leads to a distinct brain, and lack a swim bladder.
Cartilaginous fish have cartilaginous skeletons, meaning their skeletons are made from cartilage, the same material that makes up the nose of human. Cartilaginous fish also have well-developed sense organs, strong jaws, and can have placoid scales or be naked.
The Main characteristic of a cartilaginous fish is that they don't have scales, thier "scales" are cartilage. 3 types of Cartilaginous fishes are sharks, rays, and skates.
Boneless. It's worth noting that the absence of bones does not mean that there is no skeleton, as cartilaginous fish will have skeletons made of cartilage. Best examples are sharks and rays.
Sharks and rays are cartilaginous fish.
Jawless fish and cartilaginous fish have cartilaginous skeletons, and bony fish have skeletons made from bone. Cartilaginous fish and bony fish both have jaws, paired appendages, and whole vertebrae, and jawless fish lack jaws, paired appendages, and often are without whole vertebrae. Cartilaginous fish can have scales or be naked, jawless fish are naked, and bony fish have scales. Bony fish have swim bladders, and cartilaginous fish do not. Jawless fish, cartilaginous fish, and bony fish all have fins, gills, and dorsal nerve cords that lead to a distinct brain. They all also have postanal tails and notochords.
internal fertalization
Shark
It is as primitive as a cave man.
They are connected on the side closest to the head and overlap each other
Sharks are not bony fish. They are cartilaginous fish.
no. cartilaginous fishes are sharks and rays.
Jawless fish are cartilaginous, but they do not have jaws. Class Chondrichthyes, which contains most cartilaginous fish, like sharks, have powerful jaws.
Similar to Stingrays, skates are cartilaginous.
it is the cartilaginous fish.s
No, sorry that's quite false. For a great example consider a great white shark. It's a cartilaginous fish.
Both jawless fish and cartilaginous fish have skeletons made of cartilage.
Jawless fish and cartilaginous fish have cartilaginous skeletons, and bony fish have skeletons made from bone. Cartilaginous fish and bony fish both have jaws, paired appendages, and whole vertebrae, and jawless fish lack jaws, paired appendages, and often are without whole vertebrae. Cartilaginous fish can have scales or be naked, jawless fish are naked, and bony fish have scales. Bony fish have swim bladders, and cartilaginous fish do not. Jawless fish, cartilaginous fish, and bony fish all have fins, gills, and dorsal nerve cords that lead to a distinct brain. They all also have postanal tails and notochords.
Lizards are not bony or cartilaginous fish, they are reptiles.
Cartilaginous fish have cartilaginous endoskeletons, meaning their skeletons are made from cartilage. Cartilaginous fish can also have placoid scales, or they are naked. Cartilaginous fish have gills, paired appendages, strong jaws, notochords, a dorsal nerve chord that leads to a distinct brain, and lack a swim bladder.
yes
Cartilaginous fish are mainly sharks and rays. They feed off bony fish, such as goldfish.