While most major game-fish species have similar relatives, the Atlantic tarpon is one of a kind. Found on both sides of the Atlantic, the air-breathing chrome-plated tarpon is an amazing jumper and dogged fighter; it strikes lures, flies and bait. It has recently extended its range by migrating into the Pacific through the Panama Canal; tarpon are now caught regularly off Panama and Costa Rica, and appear to be breeding in the Pacific. Enduringly popular fisheries exist around all of South Florida, and for sheer numbers, Costa Rica’s Rio Colorado is hard to beat. The all-tackle world record — a whopping 286 pounds, 9 ounces — was taken off Guinea Bissau, Africa, in 2003.