When in the ocean coho salmon can look very similar to Chinook salmon. However, coho will have a white gum line on the lower jaw with darker color both inside and outside of the gum line, and will only have spots on the upper lobe of their tails. When coho return to freshwater they become red on their sides and dark greenish on their backs, heads, and fins. Coho adults may reach 25 pounds or more, but rarely exceed 15 pounds. Come chase Silver's with and enjoy the fight of your life!