Learn more about cartilaginous fish with a free trial on Britannica.com ... cartilaginous fish n. A fish whose skeleton consists mainly of cartilage, especially a member of the class Chondrichthyes, such as a shark, skate, or ray.
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Use cartilaginous in a Sentence ... See web results for cartilaginous ... See images of cartilaginous...
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Fish - Wikipedia, the free encyclopedia
A fish is any aquatic vertebrate animal that is typically ectothermic (or cold-blooded), covered with scales, and equipped with two sets of paired fins and several unpaired fins. Fish are abundant i...
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Chondrichthyes - Wikipedia, the free encyclopedia
Chondrichthyes (pronounced /kɑːnˈdrɪk.θiːˌiːz/ ) or cartilaginous fishes are jawed fish with paired fins, paired nares, scales, two-chambered hearts, and skeletons made of cartilage rather th...
en.wikipedia.org/wiki/Chondrichthyes
Protection from abrasion and predation is another function of the fish skin, and dermal (skin) bone arose early in fish evolution in response to this need. It is thought that bone first evolved in skin and only later invaded the cartilaginous areas of the fish's body, to provide additional support ... The digestive system,
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Dictionary: cartilaginous fish ... They are also produced in an organ called Leydig's Organ which is only found in cartilaginous fishes, although some do not possess it. Another unique organ is the epigonal organ which probably has a role in the immune system.
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Cartilaginous fishes: ... Vertebrates without swim bladders or lungs include cyclostomes, cartilaginous fish, and a few teleosts (e.g., flounders and other bottom-dwellers). ... serve primarily as a hydrostatic organ (regulating a fish's specific gravity)
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Comparative vertebral respiration ... Respiratory System - Presentation Transcript ... Vertebrates without swim bladders or lungs include cyclostomes, cartilaginous fish, and a few teleosts (e.g., flounders and other bottom-dwellers).
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PLEASE HELP, VERY IMPORTANT. ... Respiratory system of Fish : Branchial respiration by gills. Gills are located in branchial chamber. 5-7 gills are found in cartilaginous fishes and 3-5 gill are found in teleosts.
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"The skeletons of sharks, skates, and rays are composed of cartilage rather than bone. The 800 or so species primarily inhabit the marine realm, but a few venture into freshwater. Although they have a reputation ... In fact, sharks and their allies are extremely beneficial. They are among the top predators in the food chain,
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