pectoral fin

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Related to Pectoral fins: ventral fin, pelvic fins

pectoral fin

one of a pair of propellant/steering organs attached to the PECTORAL GIRDLE of fish.
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Though the most notable part of their anatomy is their very large pectoral fins which can be tucked along their side.
Fins hyaline: dorsal and pectoral fins slightly yellow; caudal fin with a slight orange color; anal-fin and caudal-fin margins slightly darker than remaining fin due to higher chromatophore concentration.
Some species locate food by using jets of water from the mouth to "blow" at unconsolidated sediments (2) or by using their pectoral fins to fan or move sand aside (3).
Head and body uniformly light brown; fins dusky, lower half of caudal fin darker than upper hall; pectoral fins transparent; a series of ten small dark brown blotches arranged along the distal margin of the spinous dorsal fin in the fin membrane (Fig.
3): generally light brown dorsally, grading to pale yellowish tan on lower sides; scale margins with fine, brown margins, imparting network appearance; faint, grey mid-lateral stripe on middle of side, more distinct on posterior third of body, including caudal peduncle; pelvic and median fins grey; pectoral fins translucent.
In case of other morphometric parameters; the length of the paired pectoral fins was non significantly different (P greater than 0.
synodus by having a sharply pointed snout, pectoral fins that do not extend beyond the base of the pelvic fins, higher numbers of predorsal scales (20-30 versus 15-18), and no dark spot on the upper jaw.
The data confirm that the fish control aerodynamic forces by altering the angle of their pectoral fins, which changes the effective "wingspan" and the lift force.
In many sharks the jaws are used to hold on to pectoral fins of females so copulation can take place," he added.
3): reddish pink with faintly yellowish scale margins, shading to bluish white on thorax and abdomen; irregular black spot, about pupil size, posteriorly on upper caudal peduncle; snout tip brownish, iris red with golden outer rim and narrow yellow ring around pupil; cheek and operculum with an area of lavender blue; spinous portion of dorsal fin pink grading to translucent yellowish posteriorly on soft portion; anal fin mainly translucent yellow; caudal and pectoral fins translucent yellow; pelvic fins whitish.
The specimens of fangjaw eel were identified using the following combination of diagnostic characteristics (Castro-Aguirre and Suarez de los Cobos 1983; Allen and Robertson 1994): body elongated, cylindrical, pointed at both ends; tail longer than head and trunk; pectoral fins present; gill opening relatively elongate, vertical and lateral; snout short, subconical, slightly constricted near tip; teeth very strong and pointed, biserial, largest anteriorly on jaws; body overall tan with abundant small, brown spots on back and sides; and dorsal fin brown.