1,329 Free Images of Freshwater River

rivers and streams employees(usfws)work of the service fish aquatic environment freshwater fish freshwater habitat biologists(usfws)freshwater mussel equipment

Biologists search for freshwater mussels in the Jefferson River-1

equipment water

Biologists search for freshwater mussels in the Jefferson River-2

equipment water

Biologist on the Andreafsky river-1

Fishing the Andreafsky River-1

People fishing on the Cumberland River Tailwater-1

Clubshell mussel

pennsylvania mollusk

Water Resource Management

management human

Carpsucker

wildlife nature

Salmon migrating through weir-1

underwater fish

Clubshell mussels-2

pennsylvania mollusk

People fishing on the Cumberland River Tailwater-2

Fishing the Andreafsky River-4

People fishing on the Cumberland River Tailwater-1

Scuba diver looks for Purple Cat's Paw Mussels in the Ohio River-3

People fishing on the Cumberland River Tailwater

People fishing on the Cumberland River Tailwater-1

People fishing on the Cumberland River Tailwater-3

Alligator gar-1

Floating upweller system with floating dock and trash can culture chambers

Alligator gar-2

USFWS Fisheries crew in boat

Timed sample of a long-term monitoring grid on the Cacapon River

crocodile

australia national

Plain pocketbook mussel-1

west virginia invertebrate

People fishing on the Cumberland River Tailwater-2

Plain pocketbook mussel

west virginia invertebrate

Diver collects Mucket

underwater mollusk

Clubshell mussel-2

pennsylvania mollusk

Snub Nosed Garfish (Arrhamphus Sclerolepis)

actinopterygii arrhamphuus

People fishing on the Cumberland River Tailwater-1

Nasal speculum

equipment science

Alligator gar-4

Alligator gar-1

Alligator gar-1

Lake sturgeon tailfin

Labelling quarantine equipment

equipment science

Marine filter sock

equipment science

Northern riffleshell mussels

pennsylvania mollusk

Rainbow Trout Parr

Biologist inspects fish weir-1

Alligator gar-2

Alligator gar-1

Employees using a PIT tag reader in a small stream

Alligator gar-1

High river levels

Divers checking for mussels

underwater water

Plain pocketbook mussel-2

invertebrate biology

Endangered Pit tagged mussels

pennsylvania mollusk

Diver transporting a gravid female to the shore

research science

Pressurized garden sprayer

equipment science

Disinfecting foot baths

equipment science

High river levels-1

High river levels-1

Measuring and assessing rivers and streams

Juvenile salmon near Russian/Kenai River confluence, Alaska

kenai river alaska

Small submersible pump used to pump river water to the mussel holding tank

equipment science

Alligator gar-2

Alligator gar-1

Biologist inspects fish weir-1

Biologist pilots boat on the Andreafsky River

High river levels-1

High river levels-1

High river levels-1

High river levels-1

High river levels-1

High river levels-7

High river levels-5

High river levels-5

Man holding a brown trout-1

Multi-tank recirculating system

equipment science

Multi-tank aquatic ecosystem

equipment science

Recirculating propagation system

Biologist inspects fish friendly culvert

Infestation bath container

equipment science

Glochidia expelled from the water tubes

research science

In vitro metamorphosis

equipment science

Streamside infestation

equipment science

Mantle magazine of the pistolgrip

research science

Capturing the glochidia

equipment science

People boating on the Cumberland River Tailwater

Flagging during river and stream assessment

Alligator gar-3

Aquatic invertebrate

Coastline 2d Barrier Island with Microtidal Energy

ecosystems coastal

Bluegill (Lepomis Macrochirus)

Measuring and assessing rivers and streams-2

Fish health inspection

equipment science

Large recirculating propagation system

equipment science

Brine shrimp culture facility

equipment science

Brook Trout from Seneca Creek-3

freshwater fish fish

Flagging during river and stream assessment-3

Flagging during river and stream assessment-3

Aquatic invertebrate -1

Aquatic invertebrate -3

Aquatic invertebrate -1

Aquatic invertebrate -3

Shelf fungus

Aquatic invertebrate -2

Alligator gar-2

Alligator gar-2

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