Freshwater Fishes of the Northern Rocky Mountains: Whether youre an angler or naturalist this handy field guide will help you identify 64 species of freshwater fish likely to be caught on hook-and-line. The noted diagnostic characters and beautiful color illustrations will prove an indispensable aid for identification. Included are notes on preferred habitat, geographical distribution and favorite baits for landing each species. This 12-panel guide, conveniently folds up in to a packet narrow enough to fit in a back pocket, yet sturdy enough to stand up under repeated use durable lamination also makes it waterproof. Size: 4x 9 folded; 9 x 24.5 unfolded.