Pike vs Salmon
This April 2011 photo released by the U.S. Geological Survey shows an Alaska Fish and Game technician as she poses with an invasive northern pike taken from Alexander Creek in the Susitna Basin of south-central Alaska. A federal and state study says northern pike that gobble up salmon fingerlings in Alaska streams can thrive long after that valuable species has been decimated. The study concludes that nonnative pike prefer juvenile salmon but will turn to other native fish when salmon are less abundant. (AP Photo/U.S. Geological Survey, Adam Sepulveda)
