Most cods are mostly marine fish. Only one species inhabits freshwater although several species are estuarine. Many of the marine species stray into coastal streams. Cods have chin barbels, two or three dorsal fins, one or two anal fins, and thoracic pelvic fins. All their fins lack spines. The freshwater species, the burbot, is found in North America, Europe and Asia. It is native to New York and present in the Allegheny, Susquehanna, and several watersheds in the Saint Lawrence drainage. The Atlantic tomcod is an estuarine species found in the lower Hudson River. Burbot is found in a variety of habitats, but is typical of large waters like lakes and river main channels.