Ключевые слова: aquatic fauna, aquatic life, fish biology, fish fins, fish imagery, fish photography, fish scales, fish species, fish swimming, fishing, fishing catch, freshwater fish, freshwater species, perch, perch anatomy, perch appearance, perch behavior, perch body, perch caught, perch color, perch diet, perch environment, perch features, perch feeding, perch freshwater, perch gills, perch habitat, perch habitat details, perch in nature, perch size, perch species, perch texture, perch visual,