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  • All fields: Steenstra
(12 results)



Display: 20

    • Atlantic salmon smolts

    • Fisheries; Aquaculture; Anadromous species; Endangered species; Fishes; Fisheries management;
    • Atlantic salmon spend the first two years of life in the fresh water habitats of their native stream (occasionally three, depending upon food availability). At two years of age, the fish undergo the process of smoltification, resulting in changes...
    • Atlantic Salmon Parr

    • Fish hatcheries; Anadromous species; Captive breeding; Endangered species;Fisheries management; Fishes; Freshwater fishes; Wildlife restoration; Wildlife management;
    • An Atlantic salmon parr of the Machias River in eastern Maine. Atlantic salmon of the Gulf of Maine Distinct Population Segment (DPS) were listed in an endangered status under the protection of the Endangered Species Act in December 2000. This...
    • Narraguagus River Habitat for Atlantic Salmon

    • Fish hatcheries; Anadromous species;Habitat conservation; Fishes; Endangered species;
    • Narraguagus River in eastern Maine is habitat for atlantic salmon. For more information about the recovery of atlantic salmon visit http://library.fws.gov/salmon/.For more information about the Craig Brook National Fish Hatchery visit...
    • Atlantic Salmon Adults

    • Captive breeding; Fishes; Rivers and streams;
    • Adult Atlantic salmon of the Penobscot River, ME, in their holding pool before artificial spawning
    • Atlantic Salmon Parr

    • Underwater photography; Fishes; Riverbeds;
    • Atlantic salmon parr emerging from gravel riverbed to feed, Machias River, ME.
    • Atlantic Salmon Male

    • Fishes; Rivers and streams;
    • Atlantic salmon male displaying kype, a characteristic of males during spawning season which is used in battle with rival mates.
    • Atlantic Salmon Parr

    • Fishes; Riverbeds; Underwater photography;
    • Atlantic salmon parr in cobble habitat, Machias River, ME.
    • Atlantic Salmon Pre-Smolt

    • Fishes; Underwater photography; Rivers and streams;
    • Atlantic salmon showing parr marks fading into silvery sheen of the fish's smolt stage, Penobscot River, ME.
    • Atlantic Salmon Sac Fry

    • Fishes;
    • Atlantic salmon sac fry so called for the nutrient-rich sac that serves as its food source before emerging from the gravel streambed in early spring.
    • Atlantic salmon eggs

    • Endangered species; Fishes;
    • Microscopic view of Atlantic salmon eggs near hatching. By March, and the onset of Spring, Atlantic salmon eggs are well developed. The head, eyes, heart, fins, vertebrae and blood vessels can be seen. Hatching produces a "sac fry" which remains in...

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