Question

information about cartilage fish ( nearly 2 pages)

Answer 1

Chondrichthyes is a class that contains the cartilaginous fishes: they are jawed vertebrates with paired fins, paired nares, scales, a heart with its chambers in series, and skeletons made of cartilage rather than bone. The class is divided into two subclasses: Elasmobranchii (sharks, rays, skates, and sawfish) and Holocephali (chimaeras, sometimes called ghost sharks, which are sometimes separated into their own class).

Cartilaginous fishes
Temporal range: 422–0 Ma[1][2]
PreЄЄOSDCPTJKPgN
Latest Silurian to Present
White shark.jpg
Great white shark, Carcharodon carcharias
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Clade: Eugnathostomata
Class: Chondrichthyes
Huxley, 1880
Subclasses
Elasmobranchii
Holocephali

Within the infraphylum Gnathostomata, cartilaginous fishes are distinct from all other jawed vertebrates.

Answer 2

Chondrichthyes is a class that contains the cartilaginous fishes: they are jawed vertebrates with paired fins, paired nares, scales, a heart with its chambers in series, and skeletons made of cartilage rather than bone. Cartilaginous fish (scientific name Chondrichthyes) have a skeleton made from cartilage instead of bone. Cartilage is tough and flexible and provides enough structural support to allow these fish to grow to very large sizes. Cartilaginous fish include sharks, rays, skates and chimaeras.
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