The Poljane mirror carp product line was created in the sixties. The fish breed is characteristic of patchy scaling, raised back with smaller head, and regular scaling on the belly and back. Its attributes are excellent production quantity, fast growth and resilience to diseases. It is suitable for artificial breeding, both extensively and semi-intensively. Fisheries Poljana follow century-old traditional methods of fish production.

Mirror carp extensive breeding takes 3 years and results in a distinctive meat quality. The meat retains a solid texture in cooking, has high nutriotional values and is easily digestable. It is rich in essential saturated fatty acids thusly beneficial for human health. A common ingredient in Croatian culinary specialties like grilled carp and fish paprikas.

Crop for fish feed come from nearby plantations. A well-balanced feed mixed with natural food from the ponds give off a distinctive meat chemical composition in a Poljane mirror carp.

Traditionally bred in the pristine area of the rivers Ilova, Toplica and Čavlovica free of polluters, this ecological product is well received domestically and internationally.