Leopard Pike? Northern pike typically have a cream colored belly, olive sides with oblong cream colored spots, and a dark olive back. However, two additional naturally occurring color variations have been observed in North American northern pike populations. Leopard pike have a dark mottled pattern on cream colored sides and silver pike lack spots and may have olive to blue-gray sides. NDGF Biologists observed one of these vibrantly colored leopard northern pike this spring on Lake Oahe. As if this 40 inch fish wasn’t striking enough…she is now also sporting some jewelry in the form of a jaw tag as part of our trophy northern pike tagging study.