Muskellunge (Esox masquinongy), "muskie" for short, is a long (to 1830 mm) and thin fish that looks like a Northern Pike (Esox lucius). They are native to the St. Lawrence River, Great Lakes, Hudson Bay (Red River) and the Ohio River basin. As a sport fish they have been introduced to 31 states, Muskellunge were caught in the Connecticut River from 1851 to 1902. Stocking in the Chesapeake watershed began in the 1950s. Most muskies were introduced to the reservoirs but juveniles have been seen in the upper James River in Virginia and the Susquehanna River in Pennsylvania. So far Muskellunge haven’t invaded beyond these rivers and the reservoirs around the Coastal Plain where they’ve been stocked. Reproduction within these populations is rare and is dependent on stocking. Stocking has ended in Pennsylvania but continues in Virginia. This fish is a major predator impacts on native fishes have not been reported.