Diadromous fishes spend part of their life in fresh water and part in salt water. Diadromous fishes are either anadromous or catadromous fish, meaning either they spend most of their lives at sea, returning to freshwater to spawn; or they spend most of their lives in freshwater, returning to the sea to spawn. Historically, diadromous fishes were essential to the sustenance and economic growth of North America. Today many diadromous fishes are in trouble owing primarily to habitat alteration and destruction. Displaying these twelve species together with three other Maine fish species in this gallery show emphasizes the importance of treating these species as a group, as a species-by-species approach to managing and restoring their populations has proved largely ineffective. Maine artist Karen Talbot produced the illustrations in partnership with Maine Sea Grant, NOAA Fisheries Greater Atlantic Regional Office and The Nature Conservancy, with funding from NOAA’s Habitat Blueprint for the Penobscot River.