Rajiformes /ˈrædʒɪfɔːrmiːz/ is one of the four orders in the superorder Batoidea, flattened cartilaginous fishes related to sharks. Rajiforms are distinguished by the presence of greatly enlarged pectoral fins, which reach as far forward as the sides of the head, with a generally flattened body. The undulatory pectoral … See more Rajoids typically have a dorsoventrally flattened body. The snout is slender and pointed and the wide mouth, often covered with a fleshy nasal flap, is on the underside of the head. The eyes and well-developed spiracles … See more Families Four extant and five extinct families of rajoid have been described: • Anacanthobatidae • Arhynchobatidae • Gurgesiellidae See more Species of the order Rajiformes are found throughout the world's oceans, from Arctic to Antarctic waters, and from shallow coastal shelves to open seas and abyssal regions. A few are … See more In most rajoids, water for breathing is taken in through the spiracles rather than through the mouth and exits through the gill slits. Most species swim by undulating their enlarged … See more

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WebHabitat. Gymnuridae is a marine family, but are occasionally found in estuaries and river mouths as well. Butterfly rays are benthic (bottom-dwellers), most commonly found on … http://habitatnews.nus.edu.sg/guidebooks/marinefish/text/122.htm incontinence plastic knickers

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WebRajiformes ( Batoidea, rays) (class Elasmobranchii) An order of mostly marine fish, which differ from sharks in having a strongly depressed body, with the gill openings on the … WebA new species of guitarfish, Rhinobatos borneensis sp. nov. with a redefinition of the family-level classification in the order Rhinopristiformes (Chondrichthyes: Batoidea). Zootaxa … WebRajiformes (rays; subclass Elasmobranchii, superorder Batoidimorpha) An order of mostly marine fish, which differ from sharks in having a strongly depressed body, with the gill … incise means