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Pectoral fins The paired pectoral fins are located on each side, usually kept folded just behind the operculum, and are homologous to the forelimbs of tetrapods.. A peculiar function of pectoral fins, highly developed in some fish, is the creation of the dynamic lifting force that assists some fish, such as sharks, in maintaining depth and also enables the “flight” for flying fish.
There is a large diversity in the size and shape of paired pectoral and pelvic fins among fishes. Paired fins have many functions, including display, protection, and reproduction. Many fish species also use paired fins for locomotion. Fins are supported by a bony skeleton and are powered by sets of muscles.
The pectoral fins are the two fins located on the sides of a fish (or marine mammal). These fins are primarily responsible for control of directional movement, up and down or side to side. Pectoral fins can come in all shapes and sizes which fill different functions for different fish.
pectoral fin In fish, one of the pair of fins that are situated one on each side of the fish just behind the gills (‘breast fins’). Normally they are used for balancing and braking, but in some species (e.g. Exocoetidae, flying fish) the extra-large fins are used for jumping and for gliding over the water surface.
Definition of pectoral fin : either of the fins of a fish that correspond to the forelimbs of a quadruped Examples of pectoral fin in a Sentence Recent Examples on the Web The collar refers to the section that begins directly behind the head and ends just behind the pectoral fin (right before the start of the fillet).
pectoral fin – either of a pair of fins situated just behind the head in fishes that help control the direction of movement fin – organ of locomotion and balance in fishes and some other aquatic animals Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Originally posted 2020-02-20 10:41:22.