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Smalldorsal catshark (185 words) [view diff] exact match in snippet view article find links to article

unique among its species in having a narrow and sharply pointed first dorsal fin. However, Nakaya and Sato (2000) recommended that the status of the species

bladder. Characters of Actinopteri include paired fin structure, a single dorsal fin, fulcra, a large median gular and numerous branchiostegals, ganoid scales

involves the presence of a dorsal fin and anal fin. The dorsal fin on these sharks has a spine within it. The length of the dorsal fin is about 21 to 27% of

calcified vertebrae that lack visible growth bands, and most do not have dorsal fin spines that can be used for ageing. Other methods, such as captive growth

observed to have large heads, eyes, and mouths. In most cases, the second dorsal fin will develop before the development of the first. The earliest known member

genus, Chuhsiungichthys, primarily by having a more posteriorly-placed dorsal fin. Sepkoski, Jack (2002). "A compendium of fossil marine animal genera"

which lack a deep insertion area, and are borne in front of the first dorsal fin; in addition to distinctive diplodont teeth with small intermediate cusps

The Fantail is a goldfish that possesses an egg-shaped body, a high dorsal fin, a long quadruple caudal fin, and no shoulder hump. It is similar to the

surface of the head or body. dorsal fin The fin on a fish's back. dorsal fin origin The most anterior point of the dorsal fin base. elasmobranchs The cartilaginous

of both of its dorsal fins. The first dorsal fin originates before the pectoral fins, while the second dorsal fin originates behind the pelvic fins. The

pointed snout and moderately large eyes. The first dorsal fin is large and curved, while the second dorsal fin is small and low. The back and sides are grey

than the average blenny, labrisomids are elongated nonetheless; their dorsal fin spines outnumber soft rays (which may be absent altogether), and their

Even some species look similar to Carcharhinus family, mustelus second dorsal fin is much bigger. It is found on the continental shelves of the eastern

front of the first dorsal fin is located above and just behind the base of the pelvic fin and the front of the second dorsal fin is located above the

a long, fringe-like dorsal fin running almost the entire length of the body, from the head to the tip of the tail. The dorsal fin forms two crests, a

scale rows between dorsal-fin origin and lateral line. Large individuals are silvery or golden yellow while alive with its dorsal fin red and caudal fin

was named in 1980 from the Dalmatian Coast of Croatia. The enormous dorsal fin as well as the large anal fin both feature one much enlarged ray, characteristic

differs greatly from P. evolutus in the shape of the dorsal fin. While P. evolutus has a dorsal fin that gradually grows shorter the more posterior it is

mouth contains 5 rows of large, comb-shaped teeth. This shark's single dorsal fin is pushed back towards the caudal fin, and is behind the pelvic fins.

Serranidae and in the genus Epinephelus. Epaulet groupers have two-part dorsal fin, of which the spiny part consist of eleven spines whereas the soft part

goldfish known for its extra-long, flowing double tail and high sail-like dorsal fin. The veiltail has a modified deep-and-round ryukin-shaped body, though

Mesoclupea, primarily by having a comparatively more anteriorly-placed dorsal fin. It contains the following species: †C. tsanglingensis Lew, 1974 - Turonian-Coniacian

under small rocks for protection. They have a small black spot on the dorsal fin for easy identification. Semotilus atromaculatus (Mitchill, 1818) (common

essentially perch-like, featuring a stocky build and a spine-bearing dorsal fin, and range in size from 2.5 cm in length (for Elassoma gilberti), to 1

Yuchoulepis (China, Early Triassic). A typical feature of this family is the dorsal fin, which inserts at the level of the pelvic fins in the front part of the

gaze, and may be on stalks. Their large mouths are also upturned. The dorsal fin is long and may or may not be continuous, with seven to 23 spines; the

absent snout. Premaxillary teeth are absent. They do not have a true dorsal fin, but do have a narrow ridge running along the back, which is much more

voracious, deep sea fish having long lancetlike teeth and a high long dorsal fin. Her keel was laid down on 30 September 1942 by Cramp Shipbuilding Company

usually with four pairs of barbels, an adipose fin, and strong pectoral and dorsal fin spines. Nelson, Joseph, S. (2006). Fishes of the World. John Wiley & Sons

Cretaceous period. Like the related bowfin, it has an elongated low-running dorsal fin, though this was likely convergently evolved. After Sinamia zdanskyi Stensiö

in 1982. It is distinguished by an unusual enlarged formation of the dorsal fin, called a "spine-brush complex", of unknown function. This is also found

(tuna) because the shape of the ridgeline resembles the shape of a tuna's dorsal fin. Its English name was given by British sailors in the 19th century, who

triangular and erect dorsal fin which is sometimes tilted forwards. Juveniles and adult females both have a smaller, sickle-shaped dorsal fin. When surfacing

or without a dorsal fin. It will be best if the lionhead variety of these fishes are engaged with the same variety or other dorsal fin less fishes. The

known from its caudal fin and parts of its dorsal surface, including its dorsal fin. Mark V. H. Wilson and Michael W. Caldwell, Journal of Vertebrate Paleontology

can be distinguished by dorsal fin ray count: 8–9 in the spotfin versus 11–12 in the mummichog. Additionally, the dorsal fin of F. luciae originates farther

body, a fourth across the eye, and a black blotch at the base of the dorsal fin, which also has a streak of red. This streak of red is brighter in males

Nematistiidae. Their name comes from the "rooster comb", seven long spines on the dorsal fin. Roosterfish can reach over 1.6 m (5 ft 3 in) in length and over 50 kg

distinctive longitudinal rows, the number of which may be diagnostic. The dorsal fin has a strong spine and a short base, and usually four or five soft rays

The front of the first dorsal fin is situated above the hind third of the pelvic fin, while the front of the second dorsal fin, which is about the same

difference. Gobies have two distinct dorsal fins, Blennies have a single dorsal fin that runs the length of their body. Also, Gobies' pelvic fins are fused

similar in shape to the dorsal fin, and extends from the dorsal fin to the caudal fin at the same level as the dorsal fin. The weight of the turbot

"lips", around the eye, and near the dorsal fin. There is sometimes a dark blaze between the head and dorsal fin as well. One female in the Southern Hemisphere

brownish grey with yellow nape and there is a broad black band on the dorsal fin. It reaches about 45 cm (18 in) in length. It can be found on coral reefs

its genus—a large dorsal fin with more than nine rays, prominent nasal flares and a prominent hump or crest anterior to the dorsal fin as well as a substantial

remora) is a pelagic marine fish belonging to the family Echeneidae. The dorsal fin, which has 22 to 26 soft rays, acts as a suction cup, creating a vacuum

bodies are small and slender, with large eyes and a small mouth. The dorsal fin is located behind the midpoint of their body, with pectoral fins on sides

At the base of the first dorsal fin is a small black spot from which a black stripe extends to the head. The first dorsal fin is supported by seven fin

labial furrows on the lower jaws only. The front edge of the anterior dorsal fin is immediately above the posterior end of the pelvic fin. The gap separating

members have a ridge behind their dorsal fin and an adipose fin membrane. However, in Hemipsilichthys, the dorsal fin membrane and most anterior plate

tip of snout to first dorsal distance of 34% TL; first dorsal fin high (7% TL); second dorsal fin base long (9.8% TL); long snout (12.2% TL); uniformly

The first dorsal fin has its origin just behind the rear end of the pelvic fin; there is a wide gap between it and the second dorsal fin, which is much

curvature, causing a "humpback" appearance located in front of its primary dorsal fin. It is found on the continental shelves of the tropical southeast Pacific

species of dolphin – or dolphin-like whale – said to have an additional dorsal fin on or near the head, reminiscent of a rhinoceros horn. Jean René Constant

compound noun composed of istio the Greek for "sail", referring to the high dorsal fin of the type species, Istiblennius muelleri, and blennius which is derived

the dorsal fin is weak e) The leading ray of the dorsal fin is strong f) The dorsal fin is higher for longer and convex in shape f) The dorsal fin is concave

spadefish or a short dolphinfish, with very large pelvic fins, and a long dorsal fin starting from in front of the eyes to near the base of the caudal peduncle

fish found along the northwest coast of North America. It has a single dorsal fin and a large mouth and resembles the tropical jawfish. Ronquil was laid

but that species has a triangular first dorsal fin that is only slightly falcate, and a small second dorsal fin that merely has a dark margin. The blackspot

to distinguish from C. sealei such as the black markings on the second dorsal fin. The Indonesian whaler shark is often confused with C. sealei due to their

tall and pointed (and may have rays modified into spines); The second dorsal fin runs along the rest of the back and connects to the tail and the large

ctenoid. The first dorsal fin is elongated and separated from the second dorsal fin. Both have a stiff first spine. The second dorsal fin and the anal fin

family Pristiophoridae. This shark has a long, narrow rostrum. Its first dorsal fin originates behind the tips of the pectoral fins, and its caudal fin is

specific epithet, the dorsal fin is set back, originating just behind the anal, and is much shorter than the latter. The dorsal fin is composed of a few

It also has a silvery white belly. Its fins are yellowish and it has a dorsal fin originating above the back half of the pelvic fin base and a tail fin

with very small fish scale. The first dorsal fin has 9 or 10 spines and is separated from the second dorsal fin by a space at least as long as its base

robust body, large head and lack of a dark blotch or smudge on their dorsal fin which is present on the closely related Creek Chub. The Sandhills chub

in the cold and temperate waters of the North Pacific Ocean. Lacking a dorsal fin, and appearing superficially porpoise-like, it is one of the two species

robust body, large head and lack of a dark blotch or smudge on their dorsal fin which is present on the closely related Creek Chub. The Sandhills chub

genus Centroscymnus because of the shape of its dermal denticles and dorsal fin spines but some argued to put it in the genus Scymnodon because of its

aquarium. The Bubble Eye normally has an evenly curved back that lacks a dorsal fin. The pair of large pouches of skin attached under its eyes jiggle as it

elongated bodies end in whip-like tails; their scales are large. One small dorsal fin is close to the sharply pointed, mostly scaleless head. The tail fin is

nasal flaps. They have small pebble like teeth and their first and second dorsal fin are the same size. They feed primarily on crustaceans such as crabs, shrimps

batesi longspinis, a subspecies of S. batesi with an especially long dorsal fin spine, but it is presently recognized as its own species. The species

jagged, cusped teeth and the bottom jaw has comb-shaped teeth. Its single dorsal fin is set far back along the spine towards the caudal fin, and is behind

jagged, cusped teeth and the bottom jaw has comb-shaped teeth. Its single dorsal fin is set far back along the spine towards the caudal fin, and is behind

with its dorsal, tail and anal fins joined to form one long fin. The dorsal fin also often extends farther than the anal fin. It usually has a brownish

black vertical barring on its body, and horizontal barring on its front dorsal fin. Its typical habitat is swift-flowing riffles with rubble, boulder and

rasbora, and eye-spot rasbora, an allusion to the marking situated upon the dorsal fin. This small fish is a popular aquarium fish, having been one of the species

standard length. The dorsal fin and anal fin are located far back on the body, the latter is only half as long as the dorsal fin. The pelvic fins are

genus of cusk-eels. The larvae have an ovoid body, elongate anterior dorsal-fin ray, and long trailing fleshy filament There are currently six recognized

pair maxillary and two pairs mandibular. The dorsal fin and pectoral fins have large spines; the dorsal fin spine has a lower degree of serration than the

to the middle of the adipose fin in juveniles and to the middle of the dorsal fin in the adult. The caudal fin is forked, with the upper lobe longer than

within the family Scorpaenidae, it has large, venomous spines on its dorsal fin (13) as well as other venomous spines on its pelvic fins (2) and anal

to "walk" on the ocean floor. When the batfish reaches maturity, its dorsal fin becomes a single spine-like projection (thought to function primarily

used to sense the environment. However, Trichopodus species have shorter dorsal fin base and, when sexually mature, are much larger, with the largest, the

body and fins, with a series of large white blotches along the midside, dorsal-fin base and just above the anal-fin base. It also has several dark stripes

The pelvic fins originate at a point anterior to the dorsal fin. In mature males, the dorsal fin is greatly enlarged (it is this feature that gives the

are characterized by their small villiform teeth, 3 anal fin spines, 10 dorsal fin spines, and anus located near the anal fin origin. There are currently

mitochondrial DNA lineages. T. baicalensis is also characterized by a distinct dorsal-fin colouration pattern. The Baikal grayling can grow up to a length 38 cm

very deep, scute-covered belly. In conjunction with the high, triangular dorsal fin, the belly gives the fish a rhombus-shaped body profile, hence the generic

body morphology, with a fish-like fusiform body including well developed dorsal fin, hypocercal caudal fin, paired pectoral and pelvic fins, and remarkably

this species from T. zugei, including larger eyes and the absence of a dorsal fin fold on the tail. The International Union for Conservation of Nature (IUCN)

way of its dorsal fin, which has a black patch of color extending up from the fin-base; congeners usually have light pigment in the dorsal fin, or a brighter

descriptive of the black spot that appears on the anterior part of the dorsal fin. Mojarras are silvery in color and fairly diamond-shaped. They have smooth

and the male has a larger dorsal fin, whereas the male is distinguished by longer extended dorsal and anal fins. The dorsal fin is elongated into a sickle

in size and unlike most sharks its first dorsal fin is smaller than its second dorsal fin. Its first dorsal fin starts above the anterior half of the pelvic

this species from T. zugei, including larger eyes and the absence of a dorsal fin fold on the tail. The International Union for Conservation of Nature (IUCN)

called the 10.20B. Tail surfaces were similar to the 10.20A and a deep dorsal fin was added. The I-type wing struts returned, reinforced by inclined V-struts

female 5.7 cm (2.2 in). It is overall uniform dark with a yellow first dorsal fin. It was previously known under the name Stupidogobius flavipinnis. Lumbantobing

water shark has two dorsal fins with long, grooved spines and the second dorsal fin smaller than the first. Its upper teeth are blade-like and lower have

features conspicuous spines and large dorsal eyes with a smooth body. Their dorsal fin has 14-16 rays, their anal fin has 11-13 rays, and the pectoral fin has

differentiated from other related genera by a membrane connecting their dorsal fin and adipose fin, not present in most other genera. The species of this

juvenile traits into adulthood. Some of these include an absence of a dorsal fin spine and a reduced number of ribs. S. auritus reaches a length of about

had large body sizes with a fusiform profile. There was only a single dorsal fin towards the back of the body without a fin spine. The dentition had teeth

small and have a cladodont morphology. The body is slender. The first dorsal fin has a smooth fin spine, which curves posteriorly towards its tip. Frey

continuous dorsal fin, frequently having a slight incision between the spiny portion and the soft-rayed portion. The spiny part of the dorsal fin may have

comparison with relatives known from intact bodies like Euphanerops, a dorsal fin and an anal fin near the rearmost third of its body. Earlier reconstructions

fins are colorless. It has a black spot on the first few rays of the dorsal fin, the tip of those rays are colorless. Clipper barbs natively live in a

formerly placed in Palaeospinacidae) The body is slender, with a single dorsal fin and a elongate caudal fin. The anal fin is also very elongate. The pectoral

silvery-beige colored body, accented only by a distinctive, goldish-orange dorsal fin and blue eyes. Its tail fin and flanks have pearly spots that are visible

iridescent pink-purple-blue sides and a red crown and fins (except the dorsal fin which remains dark). Red shiners can live up to three years. They are

major structural features, including the pectoral fin, first dorsal fin, second dorsal fin, and the branchiostegal rays, were formed when the larvae were

backbone of the eel, the dorsal fin is preceded by numerous isolated small spines that can be raised, giving them the name. The dorsal fin also has many prominent

to 10 ft) beneath the surface. It is a silvery fish with a prominent dorsal fin, which grows to an average length of 26.5 centimetres (10 in). It reaches

the genus, this species grows to 1.2 m and can live for up to 20 years. Dorsal fin soft rays number 240–250, anal fin soft rays 200–220, Vertebrae between

modern forms. It had a bulbous head, large eyes, a high-arched back, and a dorsal fin placed far to the rear, above the pelvic fins. Another unusual physical

tsunami. The dorsal fin originates from above the (relatively large) eyes and runs the entire length of the fish. Of the approximately 400 dorsal fin rays, the

distinctively torn dorsal fin. The whale, named Stubbs, was re-sighted in 1973, which gave Bigg the idea of photographing the dorsal fin of each killer whale

Pterygoplichthys and the H. annectens group differ most obviously in the number of dorsal fin rays (7 in the H. annectens group and 9+ in Pterygoplichthys). The two

grayish eyes. It’s dorsal and pectoral fins are a dark brown color with the dorsal fin having a small bit of red on it as well. The northern hogsucker and other

light brown blotches and numerous orange spots and stripes. It’s long dorsal fin resembles a comb. It has a compact face with large multicolored eyes.

they reach sexual maturity, they usually lose their "eyespot" on their dorsal fin. P. amboinensis is a protogynous species - all individuals start out as

or dotted lines along its body, including a line along the base of the dorsal fin. Other names for Ecsenius aequalis are fourline combtooth blenny and fourline

fish with an elongated body up to 18 cm (0.59 ft)in length, it had a dorsal fin which was indeed long and a body which tapered to a point. Chondrenchelys

Miocene of what is now Southern California in the United States. Its dorsal fin was huge in comparison with living species. It is known from the Modelo

(i.e., hind) dorsal fin of the sand tiger is almost as large as the first (i.e., front) dorsal fin. The first (i.e., front) dorsal fin of the sand tiger

modern Latidae member, and like them have two dorsal fins, the anterior dorsal fin spiny and the posterior soft-rayed. Fossil Mioplosus up to 20 inches (51 cm)

grayish eyes. It’s dorsal and pectoral fins are a dark brown color with the dorsal fin having a small bit of red on it as well. The northern hogsucker and other

Miocene of what is now Southern California in the United States. Its dorsal fin was huge in comparison with living species. It is known from the Modelo

scales, which is parallel to the dorsal profile. It has a continuous dorsal fin which has no demarcation between its spiny and rayed parts. The spiny

Tennessee River drainage. Characteristics are a relatively deep body, dorsal fin origin above back half of pelvic fin base, medium-sized eye, narrow rounded

acara", referring to the elongated, free rays at the posterior end of the dorsal fin. The specific name honours the Austrian ichthyologist Johann Jakob Heckel

spineless fins. The single dorsal fin is located posterior to the midpoint of the body and there is no adipose dorsal fin present, there is a pectoral

Clio's first daughter. Bend has a distinctive cut at the middle of her dorsal fin, the cause of which is not known. A75 Cedar (b. 2001), Blinkhorn's first

directly above the forehead, and the shortest spine directly in front of the dorsal fin. It is distinguished from its close, sympatric relative, Protobalistum

caudal peduncle. A black ocellus with a yellow ring adorns the rear of the dorsal fin, two distinctive white spots are also visible on top and bottom of the

bony head capsule that extends back as far as the first spine of the dorsal fin. The head contains a distinct narrow, bony, external protrusion called

the asymmetrical pigmentation on the lower jaw. It has a very falcate dorsal fin with a leading edge that gradually slopes into the back, halfway in shape

to the coloration of the fish, with many black spots on the body and dorsal fin, and black bands on the tail. Like all members of the genus Synodontis

behind the pectoral fin by the curved body and tail and beneath the folded dorsal fin. One egg cluster that was examined contained about 105 eggs that measured

far south. The absence of a dorsal fin in right whale dolphins, in contrast to the generally tall and curved dorsal fin of hourglass dolphins makes confusion

longer in length in comparison to the Squalus Mitsukurii. Their first dorsal fin is also structured differently than the other species in the genus Squalus

bony head capsule that extends back as far as the first spine of the dorsal fin. The head contains a distinct narrow, bony, external protrusion called

thickness to neighboring rays and by a lack of scales anterior to the dorsal fin. Currently, there are two recognized species in this genus: Pterycombus

laterally compressed and elongated bodies. They have single, somewhat high dorsal fin running nearly the entire length of the back; it may contain 54–58 pliable