How many spines does the distinctly spiny first dorsal fin of the Yellow Perch consistently house?
Answer
12 to 14 spines
As members of the perch family, Yellow Perch possess two separate dorsal fins, but their structure differs. The anterior, or first, dorsal fin is specifically characterized by being distinctly spiny. Anatomical examination consistently reveals that this first dorsal fin houses between 12 and 14 sharp spines, which serve a defensive purpose. This contrasts sharply with the second dorsal fin, which is softer, containing significantly fewer spines, typically only two or three, followed by a larger number of soft rays.

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