USFWS National Digital Library

- Subject Index
- Aerial photography; Agribusiness; Agricultural ecosystems; Agriculture; Air Pollution; Aircraft; Alpine environments; Amphibians; Amphibious vehicles; Anadromous species; Animal industry; Aquaculture; Aquatic animals; Aquatic birds; Aquatic...
- Images
- Atlantic Salmon Parr
- Underwater photography; Fishes; Riverbeds;
- Atlantic salmon parr emerging from gravel riverbed to feed, Machias River, ME.
- Images
- Atlantic Salmon Parr
- Fishes; Riverbeds; Underwater photography;
- Atlantic salmon parr in cobble habitat, Machias River, ME.
- Images
- Atlantic Salmon Sac Fry
- Fishes; Riverbeds;
- Atlantic salmon sac fry in gravel habitat.
- Images
- Fish and Wildlife Service employee investigates sediment layers
- Environmental Sciences; Employees (USFWS); Environments (Natural); Erosion; Islands; Riverbeds; Rivers and streams;
- Fish and Wildlife Service employee at eroded river bank pointing out deposit layer of shells.
- Images
- Freshwater mussel research
- Environmental Sciences; Aquatic animals; Aquatic environments; Boats; Employees (USFWS); Endangered species; Environmental quality; Indigenous populations; Islands; Mollusks; Riverbeds; Rivers and streams; Wildlife refuges;
- Fish and Wildlife Service employees at gravel island in the Ohio River studying samples of freshwater mussel shells. Motorboat transportation beached in background.
- Images
- Pacific Lamprey on Rocks
- Fishes; Underwater photography; Rivers and streams; Riverbeds;
- Pacific lampreys spawn in similar habitats to salmon: in gravel bottomed streams in riffle habitat.
- Images
- Blue shiner habitat with stream
- Riverbeds; fishes; Habitat conservation;
- Rivers and streams; Georgia; Aquatic environments; Endangered species species; Endangered species; Fishes; blue shiner habitat; Cyprinella caerulea; Blue Ridge Physiographic Province
- Images
- Stream in National Bison Range, Montana
- Riverbeds; Riparian environments; Wildlife refuges;
- Small river in brush with storm clouds in distance.
- Images
- Adult Pacific Lamprey
- Fishes; Underwater photography; Rivers and streams; Riverbeds;
- Three adult Pacific lamprey attach to rocks on the streambed.
- Images
- View of Yukon River in Alaska
- Scenics; Riverbeds; Rivers and streams;
- View of the Yukon River from its rocky shore in Alaska
- Images