This second edition incorporates almost 150 more freshwater fish species, plus all-new maps and a collection of new and revised plates. The guide includes detailed maps and information showing where to lovate each species of fish - whether that species can be found in miles-long stretches of river or small pools that cover only dozens of square feet. The ichthyological world of the twenty-first century is not the same as it was in the twentieth, and this brand-new edition of the definitve guide to freshwater fishes reflects these many changes.