Perch Fish Illustration - Scientific & Educational Diagram #210645 (License: Personal Use)

This finely rendered black-and-white illustration captures the perch (Perca fluviatilis) with scientific accuracy, emphasizing its serrated dorsal fin, overlapping cycloid scales, and lateral line. The fish is shown in profile with an open mouth, revealing pharyngeal teeth-key features used in ichthyological study and field identification. The linework mimics classic natural history engravings, suitable for textbooks or museum displays.

Used in educational materials, field guides, biology curricula, and conservation websites to illustrate freshwater fish anatomy; matches user intent for species identification, academic research, or artistic reference.