4,179 Free Images of Threatening

endangered and/or threatened species fish biologists(usfws)wildlife refuge water work of the service animals aquatic environment boat recreational

Taylor's Checkerspot butterfly

butterfly nature

Flying Earwig Hawaiian Damselfly

animals insects

Biologists search for Fountain Darter-1

Biologists in boat net Gulf sturgeon in river-1

Researchers track the movement of endangered Gray bats-1

Ash Meadows Amargosa pupfish-1

USFWS biologist nets fountain darters in the San Marcos River

Spring-loving centaury-1

Ash Meadows Amargosa pupfish-1

Researchers track the movement of endangered Gray bats-1

Ash Meadows Amargosa pupfish-1

Northern Aplomado Falcon-1

birds of prey bird

Dwarf Lake iris

Vahl's Boxwood

Black-footed Ferret-2

wildlife mammals

Researchers track the movement of endangered Gray bats

Captive Devils Hole pupfish

Biologists show length of a Gulf sturgeon in river

Biologists show length of Gulf sturgeon in river

Juvenile yearling pallid sturgeon

conservation fish

Red wolf-1

wildlife animals

Volunteer holding a sub-adult humpback chub

Hatchling Gopher tortoise feeding-2

reptiles animals

Antioch Dunes Evening Primrose

Display at National Conservation Training Center-1

Devils Hole Pupfish in captivity-2

Ash Meadows Amargosa pupfish-1

Juvenile pallid sturgeon -3

conservation fish

Wyoming toad-1

amphibian animals

Captive Devils Hole pupfish-4

Biologist shows side view of Gulf sturgeon in river

Black-footed Ferret-2

wildlife animals

Biologists in boat net Gulf sturgeon in river-1

Fishing the Columbia River

Ash Meadows Amargosa pupfish-2

Pallid Sturgeon-1

underwater fish

Condor habitat in mountainous Ventana Wilderness Area

Texas wild-rice-1

Chinook salmon-5

Biologist stocks Gila trout into Mineral Creek-4

Biologists dip net Gila trout out of tank into buckets-1

partnership new mexico

Captive Devils Hole pupfish-4

Cryogenic tanks for Pallid sturgeon sperm-2

Biologists show length of Gulf sturgeon in river-1

Bull trout-1

Young couple fishing-1

Biologists dip net Gila trout out of tank into buckets-4

partnership new mexico

Capative propagation of the purple bankclimber mussel-1

Anglers on the Columbia River

Wolf collaring-1

Captive Devils Hole pupfish-1

Biologists dip net Gila trout out of tank into buckets-4

partnership new mexico

Pallid sturgeon fry

Biologist shows front view of Gulf sturgeon in river-3

Red wolf on refuge-6

Recreational boating on the Columbia River

Pair of endangered Koloa Maoli

Fishing for salmon on the Columbia River

Biologists show length of Gulf sturgeon in river-1

Laysan Duck pair on Eastern Island on Midway Atoll

Female lynx looks around

Researchers track the movement of endangered Gray bats-1

Biologists search for Fountain Darter-1

Ash Meadows Amargosa pupfish-1

Biologists show length of Gulf sturgeon in river-1

Biologists feed a protein and sugar mixture to each captured bird

Mountain yellow-legged frog-1

amphibian animals

Caribbean roseate terns-2

Fish tank being lifted by helicopter

Captive Devils Hole pupfish-2

Display at National Conservation Training Center

Wyoming toad-2

Biologists show length of Gulf sturgeon in river-2

Dudley Bluffs twinpod flowers and ant

Rafinesque's big-eared bat-3

Closeup of a collared lynx

wildlife animals

Sockeye salmon-1

Wolf pup peeks its head out of the grass

Ash Meadows Speckled Dace-2

Biologists show length of Gulf sturgeon in river-4

Karner blue butterfly on hawkweed

butterfly animals

Pallid Sturgeon-1

underwater fish

Santa Monica Mountains dudleya

Biologist stocks Gila trout into Mineral Creek-1

Wading fisherman

Kendall Warm Springs dace-1

Biologist shows front view of Gulf sturgeon in river-1

Golden Paintbrush (CALE) found on Ebey's Bluff, located at the Robert Y. Pratt Preserve, Washington State

Biologists tagging Delmarva Peninsula fox squirrels

education mammals

Biologists show length of Gulf sturgeon in river-3

USFWS biologist nets fountain darters in the San Marcos River-7

Biologists show length of Gulf sturgeon in river-2

Fisherman on the Columbia River shore

Ash Meadows Speckled Dace-2

Biologist shows side view of a Gulf sturgeon in river

Gila Trout Transport-1

military aircraft

Juvenile pallid sturgeon yearling-2

conservation fish

Hatchling Gopher tortoise basking on rye grass

reptiles animals

Biologists show length of Gulf sturgeon in river-1

Biologists search for Fountain Darter-2

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