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Topic: Dorsal fin


  
 Vertebrates Page 4 - Keys to the Aquatic Biota of the Hawaiian Islands
Dorsal fin with 4 to 10 stiff spines.
Front dorsal with 9-10 spines distinct from, but not separated from, soft dorsal.
Dorsal fin extending most the length of the body, from above operculum to caudal peduncle and having at least 14 spines in addition to many rays
http://www.aecos.com/CPIE/ver_04.html

  
 New Zuiyo Maru Cryptid Observations - Strong Indications It Was a Marine Tetrapod
During their questioning, they explicitly stated there was no dorsal fin such as a shark would have.
Indeed, the right side upper fin was still articulated at a right angle to the body when the creature was found, which would have been a proper position to accomplish such stabilization for the creature (Obata and Tomoda, 1978, p.
I suspect that idea may have been influenced by the idea that Nessie did not have a shoulder fin so that another explanation for the shoulder feature was sought.
http://www.creationresearch.org/cgi-bin/MasterPFP.cgi?doc=http://www.creationresearch.org/crsq/articles/38/38_1/Cryptid.htm

  
 To save dolphin's dorsal fin experts combine medical technology and teamwork
Liko (pronounced Lee-ko) continues to undergo pioneering veterinary light emitting diode (LED) therapy to stimulate tissue growth and regeneration in his injured fin.
Thermal imagery revealed patterns of increased vascular development in Liko's dorsal fin and more rapid healing following application of localized LED therapy.
Liko in his sling soon after his surgery and application of extracellular matrix treatment in July.
http://www.eurekalert.org/pub_releases/2004-10/uopm-tsd101904.php

  
 [No title]
Males with forntal tenaculum upturned distally with spines along dorsal upturned edge, prepelvic tenacula with lateral fold of tissue, bearing spines along medial edge and on lateral surface, and pelvic claspers with pale fleshy distal lobes, divided distally for 1/3 their length, tips usually extending beyond distal edge of pelvic fins.
First dorsal fin triangular, concave along distal edge, preceded by a stout spine.
Fin spine just reaches origin of second dorsal fin when depressed.
http://www.acnatsci.org/press/special/DidierandSeretfinal.doc

  
 The relationship between heat flow and vasculature in the dorsal fin of wild bottlenose dolphins Tursiops truncatus -- ...
structures on heat flux across the dorsal fin.
in heat flux between the three dorsal fin positions (Table 2).
increases in heat flux across the dorsal fin.
http://jeb.biologists.org/cgi/content/full/205/22/3475

  
 Third Annual Atlantic Coastal Dolphin Conference
These results tend to support the idea of having a central dorsal fin catalog where all images are categorized by one group instead of using a standard system for many research groups.
Results were highly variable, with the most similar fin assignments coming from researchers who worked together.
A test was conducted to determine whether researchers in different areas would categorize dolphin dorsal fin images similarly when using the same cataloging system.
http://members.aol.com/adrcnet/1995/1995po01.html

  
 Locomotor function of the dorsal fin in teleost fishes: experimental analysis of wake forces in sunfish -- Drucker and ...
Locomotor function of the dorsal fin in teleost fishes: experimental analysis of wake forces in sunfish
of dorsal fin function in teleost fishes, we analyzed the wake
Locomotor function of the dorsal fin in teleost fishes: experimental analysis of wake forces in sunfish -- Drucker and Lauder 204 (17): 2943 -- Journal of Experimental Biology
http://jeb.biologists.org/cgi/content/short/204/17/2943

  
 Dorsal fin - Wikipedia, the free encyclopedia
Many (30-100%) captive killer whales (orcas) experience collapse of the dorsal fin, possibly because lack of exercise through turning leads to diminished muscle tone.
Some animals have developed dorsal fins with protective functions, such as spines or venom.
The dorsal fins of whales develop distinctive nicks and wear patterns with time, and this fact is used by wildlife biologists to identify individuals in the field.
http://www.wikipedia.org/wiki/Dorsal_fin

  
 LIMNOLOGY
The movements of the fins are due to the action of muscles, the movements possible due to the articulations and often flexibility of these rays.
Dorsal: The back or upper part of the body.
The term “ray” also applies to spines, whether they are included within the membrane of a fin or not.
http://ces.iisc.ernet.in/energy/monograph1/Methpage2.html

  
 Fish Review
Anal fin preceded by two free spines (spines may be connected to one another by a membrane in small fish and may become overgrown by skin and flesh in very large ones)
Pelvic fins thoracic, dorsal and anal fin with spines.
Pelvic fins thoracic, dorsal and anal fin with spines
http://ww2.coastal.edu/richard/Ichthyology/fishreview.htm

  
 PROGRESSIONS OF FIN CHANGE DUE TO DORSAL FIN TAGGING
Their dorsal fins were photographed by independent field efforts, providing the opportunity to monitor changes due to tagging and the process of tag loss.
Understanding the process of tag loss, tag attachment longevity and short and long- term effects of tags on the dorsal fin are essential to the development of more effective tagging methods in the future.
Eleven of these animals were resighted at different field sites of the western north Atlantic between November 1999 and May 2001.
http://dolphin-watch.com/tagprogression.html

  
 Fifth Annual Atlantic Coastal Dolphin Conference
This shows that there may be some dorsal fins that change over time and using photo-identification there is no way to classify them as the same.
In the Beaufort study area, there are some distinct dorsal fins that have been known to change over time and still be recognized as the same.
In one case the dorsal fin changed so drastically that without the freezebrand, applied during a live capture, this fin would not have been verified as the same individual.
http://members.aol.com/adrcnet/1997/1997po01.html

  
 Boston.com / News / Local / N.H. / Researcher IDs brook trout by dorsal fin markings
After Overlock brought his findings to Chacko, the pair developed a technique to individually photograph the fish and then transfer the patterns on the dorsal fin into black-and-white images.
Overlock, a senior research student from Winslow, claims to have made the discovery that brook trout have individualized dorsal fins -- what he calls "fin prints" -- that enable observers to differentiate one fish from another.
One immediate implication, according to A. Jim Chacko, professor of aquaculture at the college, is that testing and research on brook trout will no longer require the cutting or clipping of fins for identification.
http://www.boston.com/news/local/new_hampshire/articles/2005/05/03/researcher_ids_brook_trout_by_dorsal_fin_markings

  
 Locomotor function of the dorsal fin in teleost fishes: experimental analysis of wake forces in sunfish -- Drucker and ...
Experimental approach for visualizing the median fin wake.
(D) To study the wake structures and fluid forces generated by the soft dorsal and caudal fins, flow was analyzed within laser planes at three heights (1–3).
Locomotor function of the dorsal fin in teleost fishes: experimental analysis of wake forces in sunfish -- Drucker and Lauder 204 (17): 2943 Figure IG2 -- Journal of Experimental Biology
http://jeb.biologists.org/cgi/content/full/204/17/2943/FIG2

  
 Gamefish of the Amazon - Peacock Bass, Payara and Other Exotic Species
Although body coloration and markings vary greatly, in any color phase, this fish has an unmistakable mottled patch directly behind its eye.
Behavior: Cichlids show some of the most complex and highly evolved behavior patterns of all fishes.
All have only one nostril on each side of the head, not two as in other fishes and they have both a spiny, and a soft, dorsal and anal fin.
http://www.acuteangling.com/Reference/SAFishArt.html

  
 Buy The dorsal fin of a killer whale rides high above the waters surface Framed Art Print
Your satisfaction is our primary concern, and if for any reason you are not completely satisfied with your purchase, you can return the poster via our No Hassle 30-day Return Policy and 100% Satisfaction Guarantee.
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http://brandy.weblogs.us/poster/the-dorsal-fin-of-a-killer-whale-rides-high-above-the-waters-surface-1083320.html

  
 Trigger Fish Central - The Locking Dorsal Fin
This can often be achieved by applying backwards pressure to the third spine "C" as it is attached to the second spine via the fin membrane.
When the dorsal fin is erected the first and second spines interlock at "A".
To release the lock, the second spine "B" must be depressed.
http://www.manband-archive.com/triggers/datafile/fins.html

  
 [No title]
The pelvic fins have fused and form a cup.
Gobies are a large family of bottom dwelling fishes having their pelvic fins uniquely modified into a tubular cup or disk.
Identification: Two separate soft rayed dorsal fins; the second dorsal fin is three times longer than the first.
http://www.humboldt.edu/~raf1/fishbook/bony/b32.html

  
 Torn dorsal fin - Cichlid Forums Archive
he should heal up quickly all by himself..split fins can happen pretty easily & usually fuse in a couple of days or so
I guess I need to try Melafix or something, it hasn't improved.
http://cichlidforums.com/showthread/t-5952.html

  
 Gadus morhua dorsal fin references
Literature: Jordan and Evermann 1898: Reference to family Gadidae: Page 2531 (text) - "...no spines, the fin rays all articulated.
First dorsal fin originating posterior to head (predorsal distance less than about one-third of total length), its height about one-half of head length; third dorsal originating far posterior to the level of the vent.
No fin spines..." References to family Gadidae: Page 97 (text) - "Our cods have 3 dorsal fins...some in other areas have 1 or 2 dorsal fins..." "No spinous fin rays" Robins and Ray 1986: Reference to family Gadidae: Page 92 (text) - "No fin spines.
http://vm.cfsan.fda.gov/~frf/rfe3ac12.html

  
 Scubas World/Pelagics
Size: They average 4-10 lbs and are caught up to 30-35 pounds with some frequency.
Unlike the crevalle jack, its chest is completely scaled.
The coloration of the greater amberjack is characterized by a dark stripe on the head which extends from the origin of the first dorsal gin through the eye.
http://www.scubasworld.com/pelagics.html

  
 Sailfish Dorsal Fin
My question is what do most taxidermists use to add the spines to these fins with.
to the cut out fin to give the appearance of a spine.
This response submitted by Lance McGivney on 8/21/00.
http://www.taxidermy.net/forums/FishTaxiArticles/00/g/009D4BD84D.html

  
 ESPN Outdoors -- Tips & Techniques
Roosterfish have 7 distinct spines that stand high above the dorsal fin when the fish is excited or threatened.
There are also two long streaks that run from the fish's dorsal fin, down the sides, ending before the tail.
Roosterfish will inhabit sandy inshore and nearshore areas.
http://www.espn.go.com/outdoors/tips/s/f_enc_Roosterfish.html

  
 USFWS: Bozeman Fish Technology Center
Preliminary studies on walleye feed training in cages and second-year growth in ponds.
Observations on the efficacy of chloramine_T treatment to control mortality in a variety of salmonids.
Use of supersaturated oxygen conditions as a means to prevent fungal growth on fish eggs.
http://fisheries.fws.gov/FTC/FTCbozeman.htm

  
 thumper.html
The author put a segment of spinal cord in to splice the brain to the leg.
As a larva, Thumper's dorsal fin served as the host site of another larval axolotl's entire brain, inner ears (with the animal's balance sense organs) and hind leg.
(The motion evidently made the transplanted brain sea sick.) Thumper, and the transplanted stuff inside his fin, lived happily in the laboratory for several years.
http://www.indiana.edu/%7Epietsch/thumper.html

  
 [No title]
Dorsal spines separated from each other and from the soft-rayed fins, each spine having a reduced membrane attached to its posterior side; anal spine free from rest of the fin; posterior margin of pectorals nearly truncate; caudal truncate to slightly indented.
Identified by the 3 to 4 sharp, free spines before the dorsal fin, the pelvic fin reduced to a sharp spine and a small ray, and the series of plates along the sides of the body.
Dorsal spines 4-6, separate, and each with its own membrane, followed by dorsal fin with 9-11 rays.
http://www.ksu.edu/fishecology/Ichthyology/Lab8.htm

  
 CRESLI fin whale page
Fin whales, like other mysticetes, are often solitary, but can be seen in opportunistic feeding group of 3-20 or more when food is abundant.
Fin whales feed on a wide array of prey species, depending upon availability, ranging from small schooling fish such as sand eels, herring and tinker mackerel, to crustaceans such as krill and copepods, to squid.
Fin whales also have a distinctive V-shaped pattern of coloration around their heads called chevrons and may also have dark eye stripes and ear stripes which form a pattern called a blaze.
http://www.cresli.org/cresli/cetacean/finwhale.html

  
 Breder and Rasquin (1952) The sloughing of the melanic area of the dorsal fin, an ontogenetic process in Tylosurus ...
The sloughing of the melanic area of the dorsal fin, an ontogenetic process in Tylosurus raphidoma
Breder and Rasquin (1952) The sloughing of the melanic area of the dorsal fin, an ontogenetic process in Tylosurus raphidoma
http://www.getcited.org/pub/101179665

  
 * Adipose - (Aquarium): Definition
The golden pencilfish is a characin, though it does not have an adipose fin, like most other characins.
All of the fins are pointed, there is an adipose fin, the scales are large for a characin, and the mouth and dentention are extremely well developed...
Adsorption: The process by which filter media attracts unwanted molecules to its surface...
http://www.bestknows.com/aquarium/adipose.html

  
 Glossary Searched Term
Podem existir uma ou mais sendo a mais anterior chamada a primeira dorsal.
There may be two or more dorsal fins, in which case the most anterior one is designated the first.
A median fin along the back which is supported by rays.
http://www.fishbase.org/Glossary/Glossary.cfm?termenglish=dorsal+fin

  
 A Guide to the Tunas of the Western Atlantic
Distinctive Characteristics Fusiform body, more slender than that of a bluefin or a bigeye.
The liver is striated on the ventral surface, and a swimbladder is present.
The pectoral fin in juvenile albacore may be similar to that of yellowfin or bigeye.
http://www.noreast.com/tuna/tunapage2.cfm

  
 Scholastic Canada: All About Dolphins
Unlike a freeze brand which doesn't change much, the edges of a dolphin's dorsal fin, especially the back edge, change throughout the dolphin's life.
Some animals with very distinct dorsal fins may even get a name because it is easier for humans to work with names than it
In most studies like the one we are doing in the IRL, the first few years of a dolphin's life are "lost" because they are so hard to identify.
http://www.scholastic.ca/teacher/lessonrepro/lessonplans/dolphin/week5.htm

  
 Precision of aging river carpsuckers using scales and dorsal fin rays
Thus, an alternative body structure may reduce the variability of age determinations for this species.
The intercept value (a - value) calculated from the body length - structure length relationship was greater for fin rays (29.5) than scales (13.9).
In this study, we compared the precision of age determinations between readers and mean back-calculated lengths at age of river carpsuckers using scales and dorsal fin ray sections from 172 individuals collected in the Missouri River.
http://www.ksu.edu/kscfwru/annual/precisio.of

  
 The Arctic Grayling - A Grail Of Sorts
Grayling flare their dorsal fins when they are aggressively challenging or defending feeding positions or territories from grayling or other competing species.
The flared dorsal fin is, in effect, the grayling “flexing their muscles” to give the appearance of a bigger, stronger, more formidable foe.
But grayling also use this large, exotic fin as a means of communication.
http://www.outdoorcentral.com/mc/pr/03/05/09e7.asp

  
 AllRefer.com - fin (Zoology: General) - Encyclopedia
The tail is an important organ of locomotion and the paired fins are used for steering, checking speed, balancing, and for slow movements.
These are the pectoral fins, placed just back of the gills, and the pelvic, or ventral, fins, variable in position and sometimes lacking entirely.
In addition to these unpaired fins, most fish also have paired fins.
http://reference.allrefer.com/encyclopedia/F/fin.html

  
 Present by Misinterpretation, and Rarely Present by Misinterpretation
The behaviour of the Player can also be changed by un-checking the Allow Misinterpretations menu option, in which case Present by Misinterpretation is treated the same as Absent.
For example, a species of fish may normally clearly have two dorsal fins, but in occasional specimens one dorsal fin may be reduced to a small spine that could be overlooked.
Angler fish have two dorsal fins, but the first is modified into a fleshy lure that does not look like a normal fin.
http://www.lucidcentral.com/lucid3/builderhelp/present_by_misinterpretation.htm

  
 The Dorsal Fin
However, some dorsals have evolved for protective reasons in to spines or venomous rays.
The dorsal fin, acts primarily as a stabilizer or rudder for directional control.
Many catfish can lock the leading ray of the dorsal to prevent predation or to "wedge" themselves between rocks in fast flowing rivers.
http://www.thatfishshop.com/ichthyology/dorsal_fin.htm

  
 Dorsal fin routine
Not affiliated with state of Pennsylvania or any health care provider in Pennsylvania.
My dorsal fin is looking ripped, but I am having little luck with the other body parts.
My dorsal fin is looking ripped, but >I am having little luck with the other body parts.
http://www.pahealthsystems.com/message144741.html

  
 cunner
Cunners have 18 spines in their dorsal fin.
They have a pointed snout and their gill cover has scales on it.
They are found in tide pools and rocky places near pilings, seawalls and wharves in Newfoundland and the Gulf of St. Lawrence to Chesapeake Bay.
http://www.coldoceanaquarium.ca/Exhibits/cunner.html

  
 Lutjanus peru dorsal fin references
The posterior profile of the fin is rounded, and there are 10 spines and 13 or 14 soft rays.
The base of dorsal fin, especially the soft portion, bears a moderately wide covering of scales.
The anterior portion of the soft dorsal fin is not significantly taller than posterior part, and neither the anterior nor posterior fin rays are elongated.
http://vm.cfsan.fda.gov/~frf/cfsan.fda.gov/~frf/rfe3ps12.html

  
 Wind-tunnel investigation of the effects of various dorsal-fin and vertical-tail configurations on the directional ...
Yawing-moment coefficients were obtained for several dorsal-fin and vertical-tail configurations in combination with a streamlined body through a large angle-of-sideslip range and a Mach number range of 0.59 to 1.11.
The results indicated that dorsal fins improved the directional stability characteristics of the body alone and the body-vertical-tail configuration.
A ring tail was more effective at small angles of sideslip and less effective at large angles of sideslip than a tapered low-aspect-ratio vertical tail.
http://naca.larc.nasa.gov/reports/1953/naca-rm-l53b19

  
 FIGIS - FAO/SIDP Species Identification Sheet: Heterodontus francisci
Total vertebral count 103 to 123, precaudal count 65 to 76, monospondylous precaudal count 30 to 38, diplospondylous precaudal count 32 to 46, pre-first dorsal-fin spine count 12 to 16, count from diplospondylous transition to second dorsal-fin spine 7 to 16.
fieldmarks: Dorsal fins with spines, anal fin present, colour pattern of small dark spots less than one-third eye diameter on light background, no light bar on interorbital space between supraorbital ridges, first dorsal-fin origin over pectoral-fin bases.
Courtship and copulation have been observed in captivity.
http://www.fao.org/figis/servlet/species?fid=12655

  
 Marlin dorsal fin spine
While it is impossible to be 100% certain, it is highly likely that the spine is one of the dorsal fin spines of a large billfish such as a Marlin (view the Black Marlin fact sheet).
The 21cm long Marlin dorsal fin spine was brought to the Australian Museum for identification by Mario Ulliana, who found it at Bawley Point, on the southern coast of New South Wales.
This impressive 21cm long spine was brought to the Australian Museum for identification by Mario Ulliana, who found it at Bawley Point, on the southern coast of New South Wales.
http://www.austmus.gov.au/fish/fishenq/marlinsp.htm

  
 NOVA Online Island of the Sharks dorsal fin spines
Your shark has an anal fin, 5 gill slits, 2 dorsal fins, no dorsal fin spines, and its mouth is well in front of its eyes.
Your shark belongs to the order ORECTOLOBIFORMES; you can find out more about the families and species within the order in the Orectolobiformes section of Who's Who of Sharks.
http://www.pbs.org/wgbh/nova/sharks/world/som12.html

  
 Red Indianfish, Pataecus fronto
It also lacks a pair of fins found in many other fishes.
The Red Indian fish is an uncommon species with a compressed body and a long-based dorsal fin.
The remarkable thing about this behaviour is that the fish is in complete control of the "fall", and can "fall" against a current to land back in the spot from which it was removed, but all the time it looks nothing like a fish.
http://www.amonline.net.au/fishes/students/focus/patac.htm

  
 NOVA Online Island of the Sharks no dorsal fin spines
Your shark has an anal fin, 5 gill slits, 2 dorsal fins, and no dorsal fin spines.
The mouth is well in front of the eyes.
Where is your shark's mouth in relation to its eyes?
http://www.americanfieldguide.com/wgbh/nova/sharks/world/som09.html

  
 NOVA Online Island of the Sharks dorsal fin spines
Your shark has an anal fin, 5 gill slits, 2 dorsal fins, and dorsal fin spines.
Your shark belongs to the order HETERODONTIFORMES; you can find out more about the families and species within the order in the Heterodontiformes section of Who's Who of Sharks.
http://www.pbs.org/wgbh/nova/sharks/world/som10.html

  
 Wild Dolphin Dorsal Fin Identification Project
Dolphins have scars and markings on their fins that make them stand out from each other.
The best way to distinquish individual dolphins is by their unique dorsal fins.
How many of these individuals can you spot on our trip?
http://www.wilddolphinadventures.com/dorsal.htm

  
 Fin Whale (Balaenoptera physalus)
The reproductive habits of these whales remain largely unknown; however, females are thought to give birth only at 3-year intervals.
Fin whales feed mainly on krill but also eat schooling fish including herring, cod, mackerel, pollock, sardine, and capelin.
As with other migratory baleen whales, northern and southern hemisphere populations do not interbreed due to asynchronous seasons.
http://www.nsrl.ttu.edu/tmot1/balaphys.htm

  
 MSN Encarta - Herring
Herring, common name for several fishes characterized by a single short dorsal fin in the middle of the upper margin of the body and by an anal fin...
Become a subscriber today and gain access to:
http://ca.encarta.msn.com/encyclopedia_761560341/Herring.html

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