Chondrichthyes - Wikipedia
Chondrichthyes are aquatic vertebrates with paired fins, paired nares, placoid scales, conus arteriosus in the heart, and a lack of opercula and swim bladders. Within the infraphylum Gnathostomata, cartilaginous fishes are distinct from all other jawed vertebrates. The class is divided into two subclasses: Elasmobranchii (sharks, rays, skates ...
What Is a Cartilaginous Fish? - ThoughtCo
2017年8月13日 · 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.
15 Examples of Cartilaginous Fish (With Pictures)
In this article we’re going to look at some examples of cartilaginous fish. Cartilaginous fish, formally known as chondrichthyes are structurally different as their skeletons are made up mostly of cartilage. Cartilage is a firm but flexible tissue in some fish that makes up the skeletal structure.
Chondrichthyan | Definition, Species, & Facts | Britannica
2024年10月4日 · chondrichthyan, (class Chondrichthyes), any member of the diverse group of cartilaginous fishes that includes the sharks, skates, rays, and chimaeras. The class is one of the two great groups of living fishes, the other being the osteichthians, or bony fishes .
List of cartilaginous fish - Wikipedia
List of cartilaginous fish. The following is the full list of the extant species in Class Chondrichthyes, or the cartilaginous fish. Members of this class have a backbone, gills, no swim bladder, jaws, and a skeleton made of cartilage, a soft, strong material as a replacement for bone.
Cartilaginous Fish - Characteristics, Classification, & Examples
2024年9月2日 · Cartilaginous fish, or chondrichthyans, are jawed aquatic vertebrates distinguished by their cartilaginous skeletons. Unlike the bony fish of the class Osteichthyes, cartilaginous fish belong to the class Chondrichthyes.
Chondrichthyan - Cartilaginous Skeleton, Gills, & Fins | Britannica
2024年10月4日 · Chondrichthyan - Cartilaginous Skeleton, Gills, & Fins: Chondrichthyans have distinguishing features like a cartilaginous skeleton, five to seven fully developed gill clefts, and sense organs in the lateral line system that help locate vibrations of low frequencies, temperature, salinity, and minute electrical stimuli.
Fish - Classification, Jawless, Cartilaginous & Bony Fishes
2024年9月29日 · Fishes are typically divided into three groups: superclass Agnatha (jawless fishes), class Chondrichthyes (cartilaginous fishes), and superclass Osteichthyes (bony fishes). The latter two groups are included within the infraphylum Gnathostomata, a category containing all jawed vertebrates.
Cartilaginous Fish - an overview | ScienceDirect Topics
Cartilaginous fishes (Chondrichthyes), consisting of chimeras, sharks, rays and skates, is the oldest extant taxonomic group to possess Ig genes (Matz et al., 2021). In cartilaginous fishes, the ortholog of IgD is also called IgW.
刺魟鱼 - 百度百科
Stingrays (ie, elasmobranchs) are bottom-dwelling cartilaginous fish that have a flattened body, 1 or more stout spines on the tail, gill slits on the lower surface of the head, teeth modified into 2 large crushing plates, and no dorsal fin. They are not aggressive toward humans; however, injuries from these animals are very common.