Thousand Islands Border Crossing and Canada border stations are located at the opposite ends of this span. The crossing is the westernmost of the three on the St. Lawrence River and is very busy, with up to two hours of waits during the summer. The US border station of Alexandria Bay has sometimes been called "Thousand Islands", and the Canada border station of Lansdowne has sometimes been called "Gananoque", named for the nearby town where international ferry service has historically (and continues to be) provided. These border stations are also responsible for inspecting vessel traffic between the two countries. The US has seasonal vessel
North American river otter often than game fishes when both are equally available. Slow-moving species include suckers (Catostomidae), catfish, sunfish and bass (Centrarchidae); and daces, carp, and shiners (Cyprinidae). For instance, Catostomidae are the primary dietary component of North American river otters in Colorado's Upper Colorado River Basin. Likewise, the common carp ("Cyprinus carpio") is a preferred fish species for the North American river otter in other regions of Colorado. Fish species frequently found in the diets of the North American river otters include: Catostomidae, which consists of suckers ("Catostomus" spp.) and redhorses ("Moxostoma" spp.); Cyprinidae, made up of carp ("Cyprinus" spp.), chubs ("Semotilus"