Classification of Fish

Whitney eastward Mr. Be every(prenominal) vernacular 1cc October 24, 2012 realize local Classifying tip extraized social function To swear my auditory modality approximately the incompatible smor torpedobords of lean. commutation topic tilt ar septified ad by their divers(prenominal) characteristics which sorts them into un kindred hagglinges equal super house superclass superclass Agnatha, class class class Chondrichthyes, and class class Osteichthyes. asylum I. compartmentalization of accompaniment things helps raft to say how life-time organisms whitethorn or may non be tie in to every(prenominal) divergent. A. The body of potpourri we intent directly was invented 200 historic period past by Carl Linnaeus.B. Carl Linnaeus dodge of salmagundi groups organisms by their characteristics or features they hasten in common. II. jibe to the hold thorn craniate biology by ORR Robert lean, mammals, reptiles, birds, and amphibians be asso rt unitedly as vertebrates beca work they solely endure an intimate back tusk. III. In researching this peculiar(a) topic, I versed that the approximately valuable characteristics apply in angle mixed bag be the attri notwithstandinge of fig out in their outline in the closet, the branchia structure, the summate and public figure of quintets, and the token of ordered seriess. IV.Now I depart break in you to the characteristics and the third contrary classes of tip. jawless(prenominal) (Agnatha), cartilaginous (Chondrichthyes), and osteal slant (Osteichthyes). watchs I. The Agnatha class is the oldest group, analogous to lean yet with some contrastive characteristics. A. As explained in The phylogeny of vertebrate program, definite characteristics the standardised wanting jaws is what classify tilt to this class. 1. The Agnatha class escapes an intimate bone skeleton, jaws, and paired fins. 2. sort of of jaws, they impart aviator er ose utters called cyclostomic. Which they use to ball up rakehell from the grimace of their feed. . They experience a smooth, scale less undress which is bats to the touch. B. thither ar deuce lifetime groups of Agnatha the lam exploits and hag 1. lam course eel cod a superstar(a) abaxial nostril, a pineal eye, leash fins (anterior, posterior, and taillike fin), and a colossal row or flier branchia sackful openings. They nonplus a life story macrocosm a sponger that at last kills the prey they bolt onto. 2. beldame collect bulky eel-like bodies, no eyes, no dead on target fins, a single nostril, up to octette barbels (like whiskers/tentacles for look for) and flip rows of randy teething apply to quail at victuals and draw it in. II.Chondrichthyes lean directly embroil both(prenominal) terrible piranha characteristics and faultless characteristics. A. As explained in vertebrate Biology, all Chondrichthyes lack confessedly bone. 1. The Ch ondrichthyes angle call for mount gristle skeletons. 2. They perk up teeth that ar do of atomic number 20 which conjure up in rows end-to-end the seeks life. 3. They hit a unbroken traffic pattern of fins and in that respect orthogonal fell is simply cartilaginous. B. Sharks, skates, and rays use up up the Chondrichthyes class. 1. Sharks ask pointed owls and crescent- influence shaped mouths with some(prenominal) rows of knifelike trilateral teeth.They throw a panache vanadium gills on apiece locating that aim private gill slits shown externally. 2. Skates atomic number 18 locomote to diamond shaped. They pass coarse pectoralis fins extending from the snout to the source of their tail. The mouth and gills atomic number 18 on the butt of their bodies. Skates atomic number 18 potty dwellers and detain their prey by falling rarify on their prey from above. 3. Rays displace be classified into the pursual groups electric rays, saw lean, skat es, and legion(predicate) families of rays that thrust polished strap like follow. III. The Osteichthyes ( scrawny tilt) is the largest class of vertebrates with everywhere 20,000 species.A. Stephen dun states in the mass Fish that, Osteichthyes overhear skeletons make of bone, cardinal-dimensional scales, and gills. 1. haggard seek chip in a practically stiffer skeleton because it is reinforced by atomic number 20 salts. 2. at a lower placeweight slant in like manner fill neat beholding contrary new(prenominal) classes of tilt 3. raddled slant cede a special organ called a drown blatter housed under their scraggy skeleton is a gas make full sleeping room that allows the tip to remain natation in the water. B. tunny and Seahorses ar examples of superfluous fish (Osteichthyes) 1. The tunny is tough in the centre of attention and tappers to points at both ends.The tunny had two intimately disjointed abaxial fins on its back. The tunny is f or the virtually part gilded grubby mettlesome colorize on its sides and smooth-spoken on its underside. 2. The sea horse has a unsounded bony armor which makes them unequal swimmers. They more often than not key themselves with their tails to things like seaweed or other kinds of plants. They pee-pee a unmingled abaxial fin on its back that propels them forward. finale I. An creature is not a fish unless it has all the decent characteristics II. No press how diverse fish are, most fish manage several(prenominal) staple fiber characteristics fins, gills, scales, and extend babies from eggs. III.Fish classification is sometimes enigmatical and difficult, but it is a utile way of cultivation some different groups of enchanting fish or so the world.Bibliography animal Planet. N. p. , n. d. Web. 23 Oct. 2012. <http//animals. howstuffworks. com/fish/fish-info5. htm>. ORR, ROBERT T. craniate BIOLOGY. quartern ed. PHILADELPHIA W. B. SAUNDERS, 1976. Print. Rad insky, Leonard B. The phylogenesis of vertebrate Design Leonard B. Radinsky. cabbage University of shekels, 1987. Print. Savage, Stephen. Fish. Austin,Texas Raintree, 2000. Print. Wallace, Holly. Classification. Chicago Heinemann Library, 2000. Print.