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There are three species of the perch: Percaflavescens (Yellow perch), Perca fluviatilis(European perch) and Perca schrenkii (Balkhash perch).
Perca flavescens
Domain Eukarya
Kingdom: Animalia
Phylum: Chordata
Subphylum: Vertebrae
Class: Actinopterygii
Genus Perca
Species Perca flavescens