File:Gills (esox).jpg5 Creative Commons Attribution-Share Alike 2.5 truetrue You may select the license of your choice. English Gill arches supporting the gills in a pike
File:Ergasilus.jpgDescriptionErgasilus.jpg English: Ergasilus sp. females, each carrying one pair of eggs on gills of northern pike (Esox lucius) caught in a lake in southwest
File:HandlingBigPike.JPGthis is the recommended fish and angler friendly way to handle pike. Pike (Esox lucius, 96 cm caught with seine net for research purposes, taken at Lauwersmeer