post-embryonic pectoral fin morphogenesis
The process, occurring after embryonic development, by which the anatomical structures of the pectoral fin are generated and organized. Pectoral fins are bilaterally paired fins mounted laterally and located behind the gill covers of fish. These fins are used for lateral mobility and propulsion.
GO:0035120
post-embryonic appendage morphogenesis
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GO:0035138
pectoral fin morphogenesis
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