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  • All fields: Freshwater fishes
(57 results)



Display: 20

    • Juvenile Bull trout

    • Endangered and/or Threatened species; Fishes; Rivers and streams; Freshwater fishes;
    • A juvenile Bull trout resting underwater.
    • Crabs caught at the Anahuac National Wildlife Refuge

    • Adults; Aquatic environments; Connecting people with nature; Fishes; Fishing; Freshwater fishes; Leisure activities; Public access; Recreation; Recreation sites; Rivers and streams; Tourism; Visitor services; Wildlife refuges; Wildlife viewing;
    • A refuge visitor catches crabs,
    • Chucky Madtom

    • Freshwater fishes; Endangered and/or Threatened species;
    • A small catfish, the chucky madtom is found in the upper Tennessee River system in Tennessee. Currently, only three chucky madtoms have been collected from one stream, Little Chucky Creek, since 2000.
    • Bull Trout

    • Endangered and/or Threatened species; Fishes; Rivers and streams; Freshwater fishes;
    • A threatened Bull Trout in Timber Creek
    • Fishing at Anahuac National Wildlife Refuge

    • Adults; Aquatic environments; Connecting people with nature; Fishes; Fishing; Freshwater fishes; Leisure activities; Public access; Recreation; Recreation sites; Rivers and streams; Tourism; Visitor services; Water sports; Wildlife refuges;...
    • A very happy visitor caught this beautiful Red Drum fish, first thing in the morning on the refuge.
    • Fishing at the Anahuac National Wildlife Refuge

    • Adults; Aquatic environments; Buildings, facilities and structures; Connecting people with nature; Fishes; Fishing; Freshwater fishes; Leisure activities; Places (Human-made); Public access; Recreation; Recreation sites; Rivers and streams;...
    • Adults and older children fish at the Anahuac National Wildlife Refuge.
    • Atlantic Salmon Parr

    • Fish hatcheries; Anadromous species; Captive breeding; Endangered and/or Threatened 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...
    • Fish Day Hook Up

    • Freshwater Fishes;Wildlife refuges
    • Big Muddy NWR Fish Day 2002, Big Brothers/Big Sisters, Fish Day, Refuge Systems, Arrow Rock State Historic Park, MO DNR
    • Brook trout

    • Aquatic animals; Aquatic environments; Fishes; Freshwater fishes;
    • Brook trout swims in native stream.
    • Bull Trout

    • Endangered and/or Threatened species; Fishes; Lakes; Freshwater fishes; uniforms; service patch; Employees (USFWS)
    • Bull Trout caught in Swan Lake.
    • Crayfish pellet

    • Rivers and streams; Crustaceans; Freshwater fishes;
    • Crayfish pellet
    • Diseases of Trout

    • videography; freshwater fishes; fishes; diseases; fish health; fish management
    • Diseases of Trout
    • Toxicity of 22 therapeutic compounds to six fishes

    • Document; Freshwater fishes; Mollusks; Biologists (USFWS); Biological control; Fires; Fisheries management;
    • First work: Of 22 therapeutic chemicals (18 parasiticides and 4 oral bacteriostats) tested by bioassays, 16 were toxic to fish and 6 were not. Second work: Bayer 73, a molluscicide sold commercially as Bayluscide, is highly toxic to 18 species of...
    • Fish and Wildlife Service employee weighing lake sturgeon

    • Fisheries management; Fishes; Freshwater fishes;
    • Henry Quinlan, Service Fisheries biologist weighs a lake sturgeon along the Bad River in Wisconsin. This fish species is an important biological component of the Great Lakes fish community. By the early 1900's many populations of lake sturgeon...
    • Laboratory studies on antimycin A as a fish toxicant

    • Document; Freshwater fishes; Mollusks; Biologists (USFWS); Biological control; Fires; Fisheries management;
    • Laboratory studies on antimycin A as a fish toxicant. Liquid and sand formulations of antimycin A were tested in laboratory waters of various temperature, hardness, pH, and turbidity agains 31 species of fresh-water fish of various izes and life...
    • Lead hazards to fish, wildlife, and invertebrates: a synoptic reivew

    • Biologists (USFWS); Water; Fishes; Pollutants;
    • Lead (Pb) and its compounds have been known to man for about 7,000 years, and Pb poisoning has been recognized for at least 2,500 years. All credible evidence indicates that Pb is neither essential nor beneficial to living organisms, and that all...

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