Import numbers rarely match the source exportersâ stats. Reasons for import-export statistical discrepancies include re-exports, time lags, misallocations, distinct trade reporting systems, different quantity measurements and country confidentiality rules. Also, transportation and insurance costs are sometimes added to import totals.
Northern pike are freshwater fish with elongated bodies and flattened, duckbill-shaped snouts. Their mouths comprise half the length of their head and are full of sharp teeth. Northern pike are dark green to gray in color on their backs and sides with rows of pale, oval spots (wavy lines in juveniles).
Another form of northern pike, the silver pike, is not a subspecies but rather a mutation that occurs in scattered populations. Silver pike, sometimes called silver muskellunge, lack the rows of spots and appear silver, white, or silvery-blue in color. When ill, silver pike have been known to display a somewhat purplish hue; long illness is also the most common cause of male sterility.