2,182 Free Photos of Biologists(usfws)

endangered and/or threatened species aquatic environment fish boat aquaculture equipment florida acipenser oxyrinchus research work of the service

Fisheries biologist displays Gulf sturgeon underside-1

Fisheries biologist displays Gulf sturgeon underside-1

Biologist holds Gila trout in Mineral Creek

partnership new mexico

Biologists spawning trout

Endangered Tobusch fishhook cactus-1

flowering plant texas

Day in the office

Salamander House-4

amphibian research

Biologists measure each bird

Biologists search for Fountain Darter-4

Biologists release a Gulf sturgeon in river

Biologists measure a Gulf sturgeon in river

Biologist stocks Gila trout in Mineral Creek-4

partnership new mexico

Biologists search for Fountain Darter-1

Biologists search for Fountain Darter-1

Biologist measures water velocity in a flume-1

Biologists search for Fountain Darter-3

Fisheries biologist releases Gulf sturgeon -1

Biologist stocks Gila trout in Mineral Creek-3

partnership new mexico

Biologists search for Fountain Darter-1

Biologist measures water velocity in a flume-4

Biologist measures water velocity in a flume-9

Biologists search for Fountain Darter-3

Biologists capture a Gulf sturgeon in river

Biologists with Gulf sturgeon in river

Biologist measures water velocity in a flume-1

Biologist reattaches fish tank to helicopter cable-3

partnership new mexico

Fisheries biologist releases Gulf sturgeon

Biologists walking at Gavins Point National Fish Hatchery

Biologists process a Gulf sturgeon in river

Biologist measures water velocity in a flume-1

Biologist measures water velocity in a flume-3

Fisheries biologist releases Gulf sturgeon -1

Biologist measures water velocity in a flume-1

Biologists search for Fountain Darter-1

Biologist reattaches fish tank to helicopter cable-1

partnership new mexico

Biologist reattaches fish tank to helicopter cable-1

partnership new mexico

Service biologist displays a Northern pike-4

Biologist transfers adult Gila trout to buckets for distribution

partnership new mexico

Biologists search for Fountain Darter-5

Ohio River Islands biologist, Patricia Morrison, guides a boat on the river

Ready to bird

Endangered Tobusch fishhook cactus flower-2

flowering plant texas

Biologist measures water velocity in a flume-1

Biologists process a Gulf sturgeon in river-4

Biologists release a Gulf sturgeon in river-1

Biologists capture a Gulf sturgeon in river-1

Biologist working at Leadville National Fish Hatchery-6

Biologists in boat net Gulf sturgeon in river

Biologist in boat study Gulf sturgeon in river

Biologists capture a Gulf sturgeon in river-4

Fisheries biologists release Gulf sturgeon

Biologist transfers adult Gila trout to buckets for distribution-3

partnership new mexico

Biologist shows scales on the Gulf sturgeon in river

Biologists process a Gulf sturgeon in river-4

Biologists search for Fountain Darter-2

Biologists loading trout

Irrigation canal

Setting a net

Puffins near capturing boxes

Fern foliage

Biologists weigh a Gulf sturgeon in river-3

Biologists search for Fountain Darter-4

Biologists search for Fountain Darter-3

Biologists measure a Gulf sturgeon in river-1

Biologists dip net Gila trout out of tank into buckets

partnership new mexico

Biologists weigh a Gulf sturgeon in river-2

Biologist in raft during a fish population survey

Biologists search for Fountain Darter-1

Biologists weigh a Gulf sturgeon in river-5

Biologists in boat study Gulf sturgeon in river-1

Biologists tag a hellbender

north carolina amphibian

Biologist in boat study Gulf sturgeon in river-1

Biologists in boat net Gulf sturgeon in river-1

Biologist shows front view of Gulf sturgeon in river

Biologists search for Fountain Darter-1

Biologists in boat net Gulf sturgeon in river-1

Biologists search for Fountain Darter-3

Biologists dip net Gila trout out of tank into buckets-2

partnership new mexico

Biologists in boat net Gulf sturgeon in river-5

Biologists dip net Gila trout out of tank into buckets-5

partnership new mexico

Biologist conducts a swim test on a large Rainbow trout

Biologists spawning trout-2

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

partnership new mexico

Biologist shows side view of Gulf sturgeon in river

Biologists show length of Gulf sturgeon in river-1

Biologists show length of a Gulf sturgeon in river

Biologists show length of Gulf sturgeon in river

Biologists in boat net Gulf sturgeon in river-1

Biologists spawning trout-2

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

partnership new mexico

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

partnership new mexico

Biologist stocks Gila trout into Mineral Creek-4

Service pilots outside airplane

waterfowl aircraft

Radio transmitters are fitted to some of the birds

Nest searching

Floating a sandpiper egg

Biologists in boat net Gulf sturgeon in river-3

Biologist in boat study Gulf sturgeon in river-1

Biologist spawning trout-2

Biologist spawning trout-1

101 - 200 of 2,182 Next page

/ 22