How To Use Dorsal fin In A Sentence
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The fins have strong leading rays, which form a row of sharp spines along the dorsal fin.
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As the water tumbles over the huge boulders forming a great cloak of foam, the dorsal fins of the salmon along their blue/black backs pierce the sudsy water like an emerging submarine.
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Hippocampus severnsi is distinguished from congeners in having a combination of: extremely small size (height 13 mm, standard length 15 mm); 12 trunk rings; 27 tail rings; reduced ossification of inferior and ventral trunk ridges; 14 dorsal fin rays; 10 pectoral fin rays; anal fin small or absent; medium length snout which lacks a bulbous tip; raised, angular coronet; single gill opening on midline directly behind coronet supported by raised cleithral bone; scattered tubercles on trunk and tail; predominant colour dark brown (sometimes slightly marbled) with large, bright red patch covering dorsolateral surfaces of trunk rings 1-4; tiny white dots scattered all over; pale posterior section of tail with dark transverse bands.
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The ocelli (eye-like spots) on the spinous dorsal fin of males are metallic blue, surrounded by a golden ring.
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The shape of the elongated spiky dorsal fin is reflected in the sweep of the flowing ventral fins.
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The dorsal fin generally was uncoloured, unspotted, and semitransparent.
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Some snipefish, such as the ones on the cover, also have a long, pointed spine stretching back from the dorsal fin.
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The cutlassfishes are characterized by a scaleless, band-shaped body tapering to a slim pointed tail, with one dorsal fin extending the whole length of the body; the anal is also long but is very low.
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An anglerfish depends on its prey being fooled by its camouflage and by the fleshy lure into which the first ray of its dorsal fin has been modified.
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Reproductively active individuals may have a uniform dark gray body with pale abdominal striping and a pale margin on the spinous region of the dorsal fin.
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Display of its large pectoral and dorsal fins gives the impression of even greater size.
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The five to 12 separate finlets behind the anal and second dorsal fins may allow the tail to push against less turbulence by preventing vortices from forming in water flowing toward the tail.
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Flagfin mojarra has a dark marking on the dorsal fin with a white stripe just below the dark marking.
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Pirate perch is a stout, dark-colored fish, with a single dorsal fin and ctenoid scales on the head and body.
Think Progress » “When I caught a 7.5 pound perch in my lake”
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The shape of the dorsal fin is variable ranging from low and stubby with a broad base to high and falcate (curved).
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Or what about the time I escaped a Great White in Cape Town by lassoing its dorsal fin and riding all the way to the Maldives—where I opened a floating, three-star Michelin bistro with Angelina Jolie and Eckhart Tolle.
No Fighting Chance for Baseball
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Similar to the patterns on humpback whale flukes, unique markings on the dolphins' dorsal fins allow for individual identification.
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A small, fleshy fin called an adipose fin is found directly behind the dorsal fin in salmonids.
Trout and Salmon of North America
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The nicks and notches in the fluke and dorsal fin help with identification, and the photos go into a photo ID catalogue which helps determine population size and migration patterns.
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Bream have a needle sharp set of spines running through the dorsal fin similar to bass.
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Stripping line from the reel, he rocketed across a barely submerged gravel bar, dorsal fin knifing the air.
The Great Alaskan Cast and Blast
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Reproductively active males develop rows of nuptial tubercles on the front of the head and lower jaw, a thick, spongy dorsal pad anterior of the dorsal fin for cleaning eggs, and dark body coloration broken by two golden vertical bands.
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This condition, called neoteny, means it keeps its tadpole-like dorsal fin, which runs almost the length of its body, and its feathery external gills, which protrude from the back of its wide head.
Undefined
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Second, in most basal ray-finned fishes such as sturgeon and trout a single dorsal fin is present and is supported by flexible fin rays.
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The dorsal fin has 13 spines and 10 soft rays and the anal fin has 7 spines and 10 soft rays.
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The shark's dorsal fin was cut off by the fisherman.
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He jerked one out the water and one of the needlelike spines on its dorsal fin penetrated the pupil of his right eye.
SuperCooperators
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Their long, whip-like tail has a small dorsal fin near its base and up to five venomous spines.
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The carapace is closed behind the dorsal fin; bony plates surround the entire dorsal fin base.
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Beaked whales have a small, falcate dorsal fin, which is set fairly far back on their bodies (well beyond the midpoint).
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the dorsal fin is the vertical fin on the back of a fish and certain marine mammals
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The male fish develops extended filaments on the dorsal fin.
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Its small dorsal fin gave away its position, along with the two enormous white remoras that rode in parallel position on its back, heads out of the water, looking for all the world like a pair of matching gargoyles.
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Like all salmonids the grayling has a small adipose fin behind the dorsal fin.
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Scales from mid-body to the tail and the caudal and dorsal fins have black spots.
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The only other fish with three distinct dorsal fins are hakes and cods.
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Whales have streamlike bodies with highly compressed neck vertebrae, dorsal fins, and a tail with two finlike flukes arranged horizontally.
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The pilings were thick with brush in the slow, red current, and the dorsal fins of garfish turned in lazy circles in the shadow of the bridge.
The Convict and Other Stories
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The male fish develops extended filaments on the dorsal fin.
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Perch, walleye, bass, northern pike, and muskellunge are the fish that pose the most threat to black crappie young, but the large anal and dorsal fins allow the adults some protection against these predators.
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It is characterized by a deep blue-green back, silvery sides and a white belly with black irregular spots on the back, dorsal fin and both lobes of the tail.
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In other words, there's more to whales and sharks than blubber and dorsal fins; and the sooner we acknowledge this, the longer we may last in the evolutionary game of snakes-and-ladders.
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These small fish are deep bodied with a long spined dorsal fin.
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Wrasses characteristically have a protractile mouth, cycloid scales, and a single continuous dorsal fin lacking an obvious notch between the soft and spiny portions.
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Triplefin blennies, however, as the name suggests, can be distinguished by their three dorsal fins, the first two composed of spines and the third composed of soft rays.
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When stocking a pool with fish, take care to select healthy individuals with firm, meaty bodies and erect dorsal fins.
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Older males in particular also have tentacles on the first few spines of their dorsal fins.
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The carapace is closed behind the dorsal fin; bony plates surround the entire dorsal fin base.
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The eye-spotted dorsal fin is another distinctive feature.
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The breadth or depth of this fish immediately behind the opercule three inches, across the body, opposite the first ray of dorsal fin, five inches, first ray of anal three inches, length twenty-two inches.
Journals of Travels in Assam, Burma, Bhootan, Afghanistan and the Neighbouring Countries
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They resemble the true hakes in having two dorsal fins and one anal fin and no barbel.
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New fibreglass wing tips and dorsal fin additions were attached.
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I do not know what species they were — cowfish, the Jebeans called them — but they were a salmon hue, with many-rayed dorsal fins and small heads.
Kushiel's Avatar
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The ocelli (eye-like spots) on the spinous dorsal fin of males are metallic blue, surrounded by a golden ring.
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Like its relative the puffer fish, the boxfish propels itself by waving its dorsal fin (on top of its body) and its anal fin (on the bottom), and it steers primarily with its pectoral fins and tail fin.
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Male courtship display includes extending the dorsal fin, pursuing, and eventually biting the female.
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Instead of a dorsal fin they have a prominent dorsal hump about two-thirds of the way down their back.
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They were lazily gliding through the water, or sleeping on the sandy bottom, and one shark was kind enough to show off its Jaws” dorsal fin cresting the surface of the water” impression.
Underwater Adventures « Biodork
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Like all gobies it has two distinct dorsal fins, and a distinguishing feature of this species is that the front fin has a pale band at its top.
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Apart from its dorsal fin it was immaculate and spun the scales round to 23 lb 4oz.
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Threespine sticklebacks are laterally compressed, fusiform shaped fish with three sharp, erectile spines at the forward part of the dorsal fin.
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They get the name rooster because the dorsal fin looks similar to the comb on a cockerel's head.
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The smistog that creped in earlier now sat around the dorsal fins lit up by the lights of the junks that sat at the base.
TravelPod.com Recent Updates
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These forms had two dorsal fins rather than one, and all the fins were supported by an internal skeleton and musculature.
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Hornsharks are named for the sharp spines located in front of their dorsal fins.
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A high bank angle is characteristic of penguins and sea lions which also lack a dorsal fin and turn using elongate pectoral flippers.
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'Remember, just behind the dorsal fin else you'll bone the dart.
AMAGANSETT
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Brilliant reds and blues splotched its body and head, with similarly hued bands on its dorsal fins.
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Both the Greater Weever and the Lesser Weever are capable of inflicting a sharp and painful sting from the spiny rays of the first dorsal fin.
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The first dorsal fin has four rays, the lips are smooth and are roughly the same thickness as the diameter of the eye.
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The first dorsal fin has four rays, the lips are smooth and are roughly the same thickness as the diameter of the eye.
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They have a slender body with a low dorsal hump and no dorsal fin.
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Hippocampus pontohi, named after Indonesian dive guide Hence Pontoh, is distinguished from other congeners in having a combination of: extremely small size (height 14 mm, standard length 17 mm); 12 trunk rings; 26-28 tail rings; reduced ossification of inferior and ventral trunk ridges; 14 dorsal fin rays; 9-10 pectoral fin rays; anal fin small or absent; brooding area in males anterior to anus; medium length snout which lacks a bulbous tip; raised, angular coronet; fused or almost fused gill-openings on midline behind coronet supported by raised cleithral girdle; scattered tubercles on trunk and tail; distinctive branching filaments
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Looking only a dorsal fin short of the extinct ichthyosaur species, the long snout and distinctive white markings suggest it is actually a sterlet, which is a breed of sturgeon.
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Her slow glide along the coralline ridge reveals that she is slightly larger than a silver dollar, and nearly as thin, her smoothly arching dorsal fin shaping her more ovate than round.
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• A chiropodist quoted about his encounter with the poisonous dorsal fin of a weever fish described the experience as being "bitten".
Corrections and clarifications
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It had pectoral and dorsal fins with fin-rays characteristic of fish.
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Male courtship display includes extending the dorsal fin, pursuing, and eventually biting the female.
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It was also covered in bony overlapping plates, like all placoderms, but had weak jaws and a peculiar high-crested bone, somewhat like a dorsal fin, straddled its back.
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Zander are often called pikeperch as they resemble the pike with their elongated body and head, and the perch with their spiny dorsal fin.
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Hippocampus satomiae is distinguished from congeners in having a combination of: extremely small size (height 11 mm, standard length 14 mm); 12 trunk rings; 27-28 tail rings; reduced ossification of inferior and ventral trunk ridges; 13 dorsal fin rays; 9 pectoral fin rays; anal fin small or absent; brooding area in males anterior to anus; well-developed spine on snout between eyes; distinct raised coronet with laterally expanded anterior and posterior flanges ( 'H-shaped' when viewed from above); snout without a bulbous tip; single gill opening on midline directly behind coronet supported by raised cleithral bone; large spines above eyes
Practical Fishkeeping news (RSS)
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Its height above water level gives Mike, the captain, a perfect vantage point from which to scan the water for dorsal fins breaking the surface.
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The Shark Observatory at Ras Mohammed is a viewpoint on a high promontory from where, years ago, visitors could view large shoals of milkfish with their dorsal fins breaking the surface.
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Ribs curled free of the chest like those of a skeleton, and the vertebrae protruded in a line of jagged dorsal fins.
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The male fish develops extended filaments on the dorsal fin.
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Both the Greater Weever and the Lesser Weever are capable of inflicting a sharp and painful sting from the spiny rays of the first dorsal fin.
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The fabrication was done so well that at first glance the splice isn't noticeable; closer inspection, however, reveals two sets of dorsal fins.
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Pectoral fin on upper side has black tip thought to mimic dorsal fin of venomous weever fish to deter predators.
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Year round, divers can swim with white tips, black tips, silvertips, grey reef sharks and other pelagics which dot the bright coral with their prominent dorsal fins.
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• A chiropodist quoted about his encounter with the poisonous dorsal fin of a weever fish described the experience as being "bitten".
Corrections and clarifications
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They were documenting the dorsal fins of sharks, as part of an identification program, when a 10-foot-long great white shark suddenly landed on their vessel.
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the dorsal fin is spinous
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The trigger, which gives the fish its name, is the leading ray of its dorsal fin which has become bony.
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Coral snake eels peered out from tubular burrows, and a fingered dragonet tried to intimidate its own reflection on my camera dome port with a series of switchblade-like actions of its dorsal fin.
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With their long, slim bodies, they can be recognised easily by the large white tip on their first dorsal fin and the upper lobe of the tail.
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'Remember, just behind the dorsal fin else you'll bone the dart.
AMAGANSETT
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The dorsal fins were supported by a basal element articulating with one vertebra each.
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Shiner surfperch have a strongly compressed, elongate, rather deep body, an upward slanting smallmouth, relatively large eyes, and a single continuous dorsal fin with slightly longer spines than the soft rays.
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The big grey animals with sickle-shaped dorsal fins and prominent beaks are bottlenose dolphins (immortalised by Flipper).
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The dorsal fin generally was uncoloured, unspotted, and semitransparent.
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There is often a prominent hump in front of the dorsal fin.
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The zander has the rough feel and spiked dorsal fins of the perch, protecting small fish from predation, particularly from pike and herons.
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That is why their backs bear only a low, subtle ridge: ‘You would be constantly bumping your dorsal fin on sunken branches,’ she explained.
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Clinids tend to have more spines than rays on the dorsal fin, which usually begins close to the head.
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The dorsal fin is also level with the pelvic fin in roach, in rudd it is behind the pelvic fin.
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As most anglerfishes, batfishes have a dorsal fin that is modified into a spine or lure, although their lure excretes a fluid to reel in prey instead of bio-illuminating.
Signs of the Times
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Roosterfish are named for their dainty, comblike dorsal fin, but they're no chickens.
Trip Report: Deep Sea Fishing off the Coast of Costa Rica
