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Topic: Gonorhynchiformes

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Actinopterygii

	Cypriniform - TheBestLinks.com - Cypriniformes, Australia, Animal, Actinopterygii, ... (Site not responding. Last check: 2007-11-06)
		Historically these included all the forms now placed in the superorder Ostariophysi except the catfish, which were placed in the order Siluriformes.
		However, so defined the Cypriniformes are paraphyletic, and the orders Gonorhynchiformes, Characiformes (characins and allies), and Gymnotiformes (knifefishes and electric eels) have been separated out.
		Aside from the features the share with the rest of the Ostariophysi, of which the Weberian apparatus is the most notable, the Cypriniformes are distinguished by having a single dorsal fin (most of the others have a second, fleshy adipose fin) and by having teeth in the throat rather than the mouth, called pharyngeal teeth.
	www.thebestlinks.com /Cypriniformes.html (249 words)

	Untitled Document
		The major orders within the ostariophysians are the Gonorhynchiformes, Cypriniformes, Characiformes, Siluriformes, and the Gymnotiformes.
		These attributes would seem to promote occupancy of a variety of niches and food resources as well as rapid response to environmental change via early ages at maturity.
		Gonorhynchiformes: these are a small group (about 40 spp.) of largely freshwater fish (s few are brackish water or marine) that lack teeth on the jaws, have an epibranchial organ (for processing planktivorous prey), and have the first 3 vertebrae modified into what appears to be the precursory stage of the true Weberian apparatus.
	www.zoology.ubc.ca /~etaylor/426www/lectures/lectures2/teleosts2.html (1337 words)

	gcarapo
		This may alter the previously assumed range of the species, but until all the new species can be sorted out of the genus, nothing definite can be inferred as to its actual geographic range.
		Gymnotids are in the order Gymnotiformes, which are closely related to the Siluriformes, Characiformes, Cypriniformes and Gonorhynchiformes.
		Together, these five orders make up the superorder Ostariophysi, a monophyletic group defined by a unique connection between the gas bladder and the bones of the inner ear, and a response to conspecific chemical fright substances.
	www.sbs.utexas.edu /bio354l/Projects/2000/benjamin_walther (1661 words)

	Expeditions @ Field Museum - Grande - Meet the Scientist
		Dr. Terry Grande studies the skeletons of both fossil and living fishes, including catfishes and a little-known group called Gonorhynchiformes, which includes the milkfish and sandfishes.
		Terry and her students are currently studying the skeletal development of pikes and pickerels, as well as using DNA to study the relationships between these species.
		Terry has worked extensively on Notogoneus, a gonorhynchiform fish from the Green River Formation.
	www.fieldmuseum.org /expeditions/lance/scientist2.html (208 words)

	FrightChems
		Subsequently, other investigators have been busy studying the distribution of alarm substances and fright reactions in fishes.
		These inquiries have mainly centered on the important pet fish SuperOrder Ostariophyi (minnows , tetras, catfishes, many knifefish families (the suborder Gymnotoidei)), and two of the important food-fish orders Gonorhynchiformes (milkfish), and Salmoniformes (salmons and trouts, of course).
		These pheromonal behavior effects have now been demonstrated in virtually all living orders of fishes.
	www.wetwebmedia.com /FWSubWebIndex/FrightChemsFWArt.htm (791 words)

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