What is the U.S. Fish and Wildlife Service TSN recorded for Perca flavescens?
Answer
168469
The U.S. Fish and Wildlife Service maintains specific identifiers for recognized taxa, and for *Perca flavescens*, the recorded Taxonomic Serial Number (TSN) is 168469. This unique numerical identifier ensures unambiguous reference to the species across different databases and governmental records, regardless of variations in common naming or historical taxonomic debates. This standardized numbering system is vital for regulatory compliance, tracking distribution, and maintaining accurate ecological surveys, functioning as a precise digital anchor for the species within federal biological registers.

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