An X-ray of Yellow Perch (Perca flavescens). The Yellow Perch (Perca flavescens) is a favorite for anglers due to its firm white flesh when cooked. Easily caught in all seasons, this is a popular sport fish. Perch prefer a diet of young fish and aquatic insects and can reach a length of up to 30 centimeters and a mass of 2 kilograms.
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