pectoral fin


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Related to pectoral fin: pelvic fin

pectoral fin

either of a pair of fins, situated just behind the head in fishes, that help to control the direction of movement during locomotion

pectoral fin

[′pek·tə·rəl ′fin]
(vertebrate zoology)
One of the pair of fins of fishes corresponding to forelimbs of a quadruped.
References in periodicals archive ?
All specimens were relatively robust; in specimens [greater than or equal to] 6 mm long, there were large parietal and preopercular spines and melanophores on the lower jaw, on the margins of the pectoral fins, and on the ventral margin of the tail but they were absent on the upper jaw and snout and dorsally and laterally on the trunk and tail.
It is also noteworthy that, in the cases where spawning marks were present, they were located on both sides of the female's body, although male's head as well as his pectoral fin were reclined against one side of the female's body.
adloji species group through the possession of a long and triangular anal fin in females, two to four parietal neuromasts and the presence of a black ventral margin in the pectoral fins of males (except in A.
The pectoral fins recorded a positive allometric growth from hatching to 8 DAH (24.
In case of factor two (F2) the correlation with the fish body weight, fork length and total length was positive while there was negative correlation of this factor with dorsal fin length, caudal fin length, anal fin length, average length of the paired pectoral fins and also with the average length of the paired pelvic fins (Table 5).
Calcified structures (scales, pectoral fin rays, and dorsal fin spines) were collected from five largemouth bass per 12.
4E), where transverse and oblique rows occur, and the branchial region ventral to the pectoral fins (Fig.
large mouth with thick lips; canine teeth on both jaws, strong and with an enlarged pair nearby the tip, visible when mouth is closed; vomerine tooth patch crescentic to triangular, without a medial posterior extension; preopercular margin with a weak knob; dorsal fin with 10 spines and 14 soft rays; anal fin rounded, with 3 spines and 7 soft rays; pectoral fins short, not reaching level of anus; with 16 to 18 rays; caudal fin nearly truncate.
Again, he cuts underneath the pectoral fin, but this time clutches the knife and twists it.
The humpback calf breached 230 times and its pectoral fin slapped 671 times in four hours.
The rear edges of the dorsal and caudal fins are darker, and there may be a black spot near the pectoral fin.