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Topic: Pelvic fin

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	Gobiidae, the gobies in the Guide to the larval reef fishes of the Caribbean: gobiid coral reef fish larvae
		The remainder, the "short" gobies with fused pelvic fins, are divided up into the six dorsal-spined gobies in Group 2 and the seven dorsal-spined gobies in Group 3.
		The pelvic fins on the right and left can be completely separate, with the base of the innermost fin ray clearly separated by a space from the base of the ray on the other side.
		The pelvic fins can be divided down to the base, or only partially-divided, leaving the proximal innermost fin rays still fused (as in larval Gobulus myersi, pictured at left).
	www.coralreeffish.com /gobiidae.html (2865 words)

	pelvic fin - Encyclopedia.com
		pelvic fin (ventral fin) One of the pair of fins positioned on the under-side of the body of a fish.
		Depending on the species, the pelvic fins can be found in a mid-ventral (abdominal) position, underneath or just behind the pectoral fins (thoracic position), or in front of the pectorals in the throat region (jugular position).
		insertion of pectoral fin to anterior insertion of pelvic fin.
	www.encyclopedia.com /doc/1O8-pelvicfin.html (1265 words)

	Fishery Bulletin: Larval development of red snapper, Lutjanus cam... @ HighBeam Research (Site not responding. Last check: )
		As the pelvic fin developed, this pigment migrated internally to a position anterodorsal to the insertion of the pelvic fin and remained discernible through the body wall of specimens up to 4.9 mm.
		Fins Melanophores were present on the pelvic fin bud at its emergence in the 3.6-mm (9 DAH) specimen.
		Pigment on the pelvic spine is present in L. griseus larvae as small as 4.2 mm and the striped pattern is evident by at least 6.2 mm (Richards and Saksena, 1980).
	www.highbeam.com /library/doc0.asp?DOCID=1G1:64909348&refid=ip_encyclopedia_hf (6501 words)

	The Pelvic Fin
		The "feelers" of gouramis, a sensing and tasting organ, have evolved from the pelvic fins.
		As the drawings below show, pelvic fins may be positioned anywhere from the throat to the abdomen.
		Sometimes ventral pelvic fins are fused with the anal fin, in which case they are used for propulsion.
	www.thatfishshop.com /ichthyology/pelvic_fin.htm (97 words)

	SHARKS
		Fins: All sharks have paired fins - pectoral and pelvic - on the underside of the body.
		In male sharks, each pelvic fin has a clasper, or copulatory organ, for implanting sperm inside the vent (the common reproductive and excretory opening) of the female.
		The prominent scales, bones of the head and bony fin rays of bony fishes are absent in sharks.
	www.geocities.com /buhsmsm/SHARKS.html (823 words)

	Description Scalloped Hammerhead- Sphyrna lewini (Site not responding. Last check: )
		The second dorsal fin has a posterior margin that is approximately twice the height of the fin, with the free rear tip nearly reaching the origin of the upper caudal lobe.
		The moderately tall first dorsal fin has a rounded apex and is falcate in shape with a free rear tip in front of the origin of the pelvic fins.
		Pelvic fins are not falcate with straight of slightly concave posterior margins.
	www.flmnh.ufl.edu /fish/Gallery/Descript/Schammer/ScallopedHammerhead.html (1654 words)

	Glossary of Fish Related Terms
		Abdominal pelvics -- Pelvic fins located on the abdomen far behind the pectoral fins; pelvic bones do not attach to pectoral girdle.
		Dorsal fin ray -- Refers to one of the cartilaginous rays (stiff rods) located in the membrane of a dorsal fin.
		Pelvic fins -- Posterior paired fins, located in the abdominal position or towards the rear.
	www.arkansasstripers.com /fishing-glossary.htm (5405 words)

	FIN - Definition
		Note: Fishes move through the water chiefly by means of the caudal fin or tail, the principal office of the other fins being to balance or direct the body, though they are also, to a certain extent, employed in producing motion.
		{Fin ray} (Anat.), one of the hornlike, cartilaginous, or bony, dermal rods which form the skeleton of the fins of fishes.
		{Unpaired, or Median}, {fins} (Zo["o]l.), the dorsal, caudal, and anal fins.
	www.hyperdictionary.com /dictionary/fin (414 words)

	[No title]
		Fins generally colorless, with the exception of an ocellate spot in dorsal, and rarely a dark spot in anal fin.
		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.
		Anal fin with 1 spine and 9-10 rays; pelvic fin with 1 heavy spine and 1 ray (pelvic skeleton absent in some populations.
	www.k-state.edu /fishecology/Ichthyology/Lab9.htm (1210 words)

	Bear Gulch - Fish Anatomy - Pelvic Fin
		Pelvic fins play a role in stabilization of the body during swimming.
		The bony fish pelvic fin is simple and is supported on a flat-lying triangular plate, somewhat similar to that of the female of the shark Falcatus.
		Pelvic fins of all sexually mature male chondrichthyans, however, also feature extensions of the fin axis that form sperm conducting ducts for internal fertilization of females.
	www.sju.edu /research/bear_gulch/pages_fish_other/fish_parts_pelvic.php (133 words)

	Description Spotted Eagle Ray -Aetobatus narinari (Site not responding. Last check: )
		The pelvic fins are narrowly rounded and the dorsal fin is small with its origin just posterior to the pelvic fin insertion point.
		The southern eagle ray has a dorsal fin originating well behind the level of the rear edges of the pelvic fins while this fin originates just behind the pelvic fin insertion point in the spotted eagle ray.
		The upper sides of the pelvic fins are a similar color to the background color of the body along with dark posterior edges and 6-10 spots.
	www.flmnh.ufl.edu /fish/Gallery/Descript/SERay/SERay.html (1763 words)

	breeding (Site not responding. Last check: )
		Although these pelvic fins can extend al the way to the tail fin, it takes a fish from 8 months to 1 year to get the full length on their fins.
		A female will usually have pelvic fins that have a 1/3 ot 1/2 centimeter gap between the tip of her pelvic fin and the first spine of her anal fin.
		The eyeballed measurement of pelvic fin lngth should be tanken when the fish has it's pelvic fins relaxed (midway from the body), not when the fins are tucked tightly against the body or when they are fully erect.
	www.homestead.com /wongclan/files/breedingm.html (688 words)

	Vertebrates Page 2 - Keys to the Aquatic Biota of the Hawaiian Islands
		Pelvic fins very near, under, or in front of pectoral fins: thoracic in position (Fig.
		Anal fin of males modified as an intromittent organ (long and narrow) located close to pelvic fins.
		Anal fin normal in both sexes and distant from pelvic fins.
	www.aecos.com /CPIE/ver_02.html (708 words)

	ICLDR - Abstract Information - Developmental genetic basis of the evolution of pelvic fin loss in pufferfish Fugu ... (Site not responding. Last check: )
		The pelvic fins are located in the lower part of the flank and are homologous with the posterior appendages of the tetrapods.
		During evolution of fishes, the pelvic fins may move forward, become reduced, or even be entirely lost.
		We have approached the mechanisms for the evolution of pelvic fin loss, using Japanese pufferfish (Fugu rubripes) as a model organism.
	icldr.hgu.mrc.ac.uk /Abstracts/tanaka.html (238 words)

	Appendicular Skeleton
		The posterior girdle is the hip or pelvic girdle, consisting of endochondral skeletal elements that support the pelvic fin or limb
		- basal pterygiophores that articulate the fin to the pectoral girdle
		Paired fins: the paired pectoral and pelvic fins of gnathostome fishes are homologous with the limbs of tetrapods
	www.shsu.edu /~bio_mlt/Chapter9.html (1359 words)

	Hiodontidae
		There are 7 pelvic fin rays, a pelvic axillary process, 7-10 branchiostegal rays, a subopercular bone is present on the side of the head and scales in the lateral line number 51-62.
		The anal fin base has 2-3 rows of small scales and, in males, the anterior part of the anal fin is greatly enlarged leaving the margin behind strongly concave.
		Fins are dusky, and a fl stripe margins the leading edge of the pectoral fin.
	www.briancoad.com /ncr/Hiodontidae.htm (883 words)

	Glossary of Fish Related Terms
		Dorsal fin -- The fin located on the back of fishes, and in front of the adipose fin, if it is present.
		Dorsal fin ray -- Refers to one of the cartilaginous rays (stiff rods) located in the membrane of a dorsal fin.
		Pelvic fins -- Posterior paired fins, located in the abdominal position or towards the rear.
	www.streamnet.org /pub-ed/ff/Glossary/glossaryfish.html (5789 words)

	Bay of Fundy Species List Search - Glossary (Site not responding. Last check: )
		Pelvic arch or girdle – the bones to which the pelvic fins are attached; public bones
		Pelvic axillary process – a slender scale-like process or tab of tissue that develops at the base of the pelvic fins of many salmonid and other bony fishes
		Vertical fins – the fins (dorsal, anal, and caudal) on the median (center) line of the body, in contrast to the paired fins (pectorals and pelvics)
	gmbis.marinebiodiversity.ca /BayOfFundy/glossF.html (3261 words)

	[No title] (Site not responding. Last check: )
		Sexual maturity in males was determined by the emergence of the frontal tenaculum, hardened pelvic claspers, and denticles present on the pelvic claspers, frontal tenaculum, and prepelvic tenacula.
		Pelvic claspers are bifurcate, divided distally for 1/3 their length, with a third, fleshy lobe that lies along the dorsal side of the medial cartilaginous arm.
		Hydrolagus trolli also differs from H. pallidus in having pelvic clapsers that reach beyond the distal margin of the pelvic fins, a frontal tenaculum that is upturned and its distal edge not flat, first dorsal fin with pale margin rather than the darker margin observed in some specimens of H. pallidus.
	www.acnatsci.org /press/special/DidierandSeretfinal.doc (2525 words)

	Species Summary (Site not responding. Last check: )
		Dorsal fin origin situated in the middle of the space between pelvic-fin origin and anal-fin origin, its superior border straight or convex, and with 3 unbranched and 7 to 8 branched rays (Ref. 52918, Ref. 52923).
		Anal fin with concave inferior border, not reaching the caudal fin, and with 3 unbranched and 10 to 11 branched rays (Ref. 52918, Ref. 52923).
		Pelvic fin, not reaching anal-fin origin, with 2 unbranched and 6 to 7 branched rays (Ref. 52918, Ref. 52924).
	www.fishbase.org /Summary/SpeciesSummary.cfm?ID=11613 (292 words)

	Fish Review
		Pelvic fins thoracic, dorsal and anal fin with spines.
		The dorsal fin consists of two well-separated parts, the first of which (the spinous dorsal) is often small and not always obvious.
		It is distinguished from the similiar Atlantic silverside by having a shorter anal fin (16 -19 rays) with a curved border, the anterior rays being longer than the posterior ones..
	ww2.coastal.edu /richard/Ichthyology/fishreview.htm (1849 words)

	Damsel Fish Index
		There is a large white patch under the dorsal fin and a smaller one on the bridge of the head.
		The pelvic, pectoral and anal fins are brown and the dorsal fin is edged in brown.
		It has yellow fins, except for the rear of the dorsal and anal fins which are colorless, along with the caudal fin.
	www.aqualink.com /catalogs/ydamsel.html (1482 words)

	A New Approach to Earth History » Tiktaalik roseae – a missing link?
		The gap between the pelvic fin of Tiktaalik and the hindlimbs of both Acanthostega and Icthyostega is so large that the authors omit to comment on it, except to say that Acanthostega does not have Tiktaalik’s lepidotrichia.
		In the drawing the pelvic fins are illustrated as fleshy lobes.
		The gait involved both the pelvic and pectoral fins and the body and tail were lifted clear of the seabed.
	www.earthhistory.org.uk /technical-issues/tiktaalik-roseae (1679 words)

	The pelvic fin and girdle of Panderichthys and the origin of tetrapod locomotion : Nature
		The pelvic fin and girdle of Panderichthys and the origin of tetrapod locomotion
		Despite its importance, the transformation from pelvic fin to hindlimb is the least studied and least well-documented part of this transformation, which is bracketed by the osteolepiform Eusthenopteron and the early tetrapods Ichthyostega and Acanthostega, but is not directly illuminated by any intermediate form.
		The evolution of tetrapod locomotion appears to have passed through a stage of body-flexion propulsion, in which the pelvic fins played a relatively minor anchoring part, before the emergence of hindlimb-powered propulsion in the interval between Panderichthys and Acanthostega.
	www.nature.com /nature/journal/v438/n7071/abs/nature04119.html (378 words)

	Journal of Aquariculture & Aquatic Sciences Article
		Lateral-line scale counts are taken to the base of the caudal fin (generally in wrasses of the genus Thalassoma there is one pored scale posterior to the end of the hypural plate).
		In preservative a small dark brown spot is apparent at base of each of the dorsal spines and rays, commencing with the fifth spine (spots generally faint or absent at base of eighth spine and second and ninth rays).
		Notable among the color differences of adults is the dark outer half of the caudal fin of heiseri and the lack of strongly curved bands on the head.
	www.petsforum.com /cis-fishnet/JAAS/D057.htm (4966 words)

	Fishery Bulletin: The dusky rockfishes (Teleostei: Scorpaeniforme... @ HighBeam Research (Site not responding. Last check: )
		Pectoral fins with ray 10 longest, extending to or slightly anterior to vent, fin-ray length 24.6-31.8% SL, fin-base to ray-tip length 24.6-31.8% SL; fin-base width 9.5-11.9% SL.
		Pelvic fins extend about 60% of distance from pelvic-fin base to anal-fin origin, falling well short of vent, ray length 20.5-26.0% SL, spine length 52.4-67.4% ray length.
		Pelvic fins extend about 60% of distance from pelvic-fin base to anal-fin origin, falling well short of vent, ray length 19.2-29.2% SL, spine length 44.9-70.7% ray length.
	www.highbeam.com /library/doc0.asp?DOCID=1G1:120907583&refid=holomed_1 (7107 words)

	Body
		That this paper should claim this merger of the claspers with the pelvic fins as possibly a valid reason for Yano's misinterpretation indicates that the authors of this paper were "clutching at straws." Creationists appear to have somewhat uncritically accepted this explanation.
		It seems that the pectoral fin was overlayed by a dorsal fin, thus presenting the appearance of an extremely long fin.
		Firstly, Yano, who saw the carcass, protested that it was a pectoral fin (we prefer the word "flipper"), and secondly, the point of attachment of the lump is far too far to the right of the spinal column to have ever been attached at any stage along the centre.
	ourworld.compuserve.com /homepages/bowdenmalcolm/plsfin13.htm (5962 words)

	KEY TO GENERA OCCURRING IN THE AREA:
		The majority of gobies have the pelvic fins united to form a ventral disc; those gobies whose pelvic fins are not united are typically found in coral reef areas.
		Eleotridae: base of second dorsal fin equal to or shorter than distance from end of second dorsal fin to base of caudal fin; pelvic fins always separate; found mostly in brackish or freshwater habitats, only one species occurs on coral reefs.
		Pelvic fin in adult males dusky; in females, pelvic fin with bilateral streaks paralleling innermost ray coursing
	gobiidae.com /FAO_WA_gobies.htm (4544 words)

	Apistogramma.com - The Dwarf Cichlid Connection Pelvicachromis sp. Blue Fin
		Lucanus explained that the subject cichlid fish is highly distinctive in that females exhibit a prominent iridescent turquoise bar on the dorsal fin.
		In males of all known Pelvicachromis species, the first pelvic fin ray is the longest, giving the fin a pointed appearance; while, in females, the second or third pelvic fin ray is the longest, giving the fin a rounded appearance.
		In a newly taken photo of a living female specimen, the second and third pelvic fin rays are of equal length, giving this fin a somewhat rounded appearance but not as rounded as those of female Pelvicachromis species.
	apistogramma.com /cms/Pelvicachromis/.../Pelvicachromis_sp._Blue_Fin (566 words)

	Sex Camera - White Shark Trust
		Both male and female Sharks have a pair of pelvic fins situated between the pectoral ("wings") and the caudal fin ("tail") on the ventral side of their body.
		This pelvic area becomes even more difficult to observe under a cloudy sky due to the reflection at the surface of the water or when the water visibility is reduced.
		One assistant is usually handling the pole and camera aiming at the belly of the Shark from below, while another assistant is carefully scanning the LCD screen to see the pelvic fin area for the presence or absence of claspers.
	www.whitesharktrust.org /pages/sexcam.html (432 words)

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