Skip to main content
U.S. flag

An official website of the United States government

Explore Search: fish

Filter Total Items: 1684
Event
Willamette River near Corvallis, Oregon

Webinar: Evaluating the Effectiveness of Seasonally Assisted Migration through Fish Rescue Programs

Project
A huge canyon surrounded by deep-set cliffs opens to reveal a sunny gorge and part of the Colorado River.

The Impacts of Drought on Fish and Wildlife in the Southwestern U.S.

Project
Image Collage of Landsat, pollinator, and volcanologist

Predicting Climate-Driven Invasive Fish Spread to Support Indigenous and State Freshwater Management in Florida

Project
small speckled fish in a hand

Response of fish assemblages and habitat to stream restoration in the Ashokan Watershed

Project
Virginia Ecoflows Website Thumbnail Image

River Continuum Concept Ecological Limit Functions for Fish and Benthic Data in Virginia

Research
Night sampling of smallmouth bass (Micropterus dolomieu)

Endocrine Disrupting Chemicals and Prevalence of Intersex in Fish Populations in New Jersey

Research
Scientists collecting smallmouth bass

Endocrine Disrupting Chemicals and Prevalence of Intersex in Fish Populations in New Jersey

Research
WARC scientist sits on a dock on the Red River with a syringe preparing to collect blood from a Grass Carp

Laboratory Investigations with Fish Species to Assist with Implementing Barataria-Terrebonne National Estuary Program’s Ecological Management Action Plans

Research
Chesapeake Bay image

Assessing stream health and fish habitat in streams of the Chesapeake Bay Watershed

Research
Image shows a fish in a tank beneath a half-circle shelter

Complex Mixtures, Complex Responses—Using Comprehensive Approaches to Assess Pharmaceutical Effects on Fish

Project
Maury River, Virginia

FishTail: A Tool to Inform Conservation of Stream Fish Habitats in the Northeast

Project
Assessing the Functional Equivalency of Hawaiian fishponds

Impacts of Climate Change on Water Quality and Fish Recruitment in Native Hawaiian Fishponds

Project
Tule Perch

Understanding Influences on Habitat Quality for Delta Smelt and Other Imperiled Fish Populations

Project
boulders in a small stream with green vegetation along banks

Mercury concentration in water, sediment, and fish in the Neversink watershed, New York

Project
USGS Great Lakes Science Center’s Sea Ark at Sunrise

Does Less Ice Cover Lead to More Turbulent Overwinter Conditions on Great Lakes Fish Spawning Reefs?

Event
Lake Michigan near Grand Haven, Michigan

Webinar: Variable Warming in Lakes of the Upper Midwest and Implications for Sport Fish

Research
SS1-Figure 1 Microscopic Appearance

Science Summary—Indicators of Reproductive Endocrine Disruption in Fish in the Chesapeake Bay Watershed

Topic
Fish and estrogenicity sampling locations in the Chesapeake Bay river watersheds

Land-use influences on estrogenic-endocrine disruption in fish within the Chesapeake Bay watershed

Project
3 people in a boat on a river - 1 driving 2 holding big fishnets

Contaminants in fish tissues from AOCs in New York State: The Niagara River AOC

Project
Tagging channel catfish with acoustic transmitters and infesting them with Winged Mapleleaf glochidia

Hydroacoustic mapping for native mussel and host fish habitats using Quadrula fragosa and Ictalurus punctatus

Research
USGS scientist pauses during field work in a stream impacted by acidic runoff and metal contamination

Fish Diets Switch From Aquatic to Terrestrial Insects in Streams Effected By Metal Contamination

Project
blue Snake River water running through an arid, high desert canyon. Two boats are travelling on the river into the distance.

Groundwater and Stream Temperature Modeling to Assess the Effect of Warming Temperatures on Coldwater Fish

Research
Image: Fathead Minnow

Unique Approach to Measure Per- and Polyfluoroalkyl Substances Uptake in Fish, Mussels, and Passive Samplers

Project
Image: Pallid Sturgeon

Projecting Future Impacts to River Systems and Large River Fish: Missouri River Sturgeon Example

Project
Sudan Black B dyed Grass Carp

Assessment and methods development of dyed feeds for the evaluation of toxic fish bait consumption

Project
View of Mount Ascutney, Connecticut River, and Cornish-Windsor Bridge

NorEaST: A Tool to Understand the Responses of Fish to Changes in Stream Temperature

Project
Ear Mountain in the background, with herds of elk in the foreground. The sun is setting, casting an orange and blue glow over the whole scene.

Supporting U.S. Fish and Wildlife Service’s Species Status Assessments Efforts with Climate Scenario Planning Tools

Project
Thermal infrared image of Sandhill cranes on the Platte River

Remote Sensing in support of the U.S. Fish and Wildlife Service Migratory Bird Surveys Branch

Research
Largemouth bass at the USFWS Mountain-Prairie Aquarium

Mercury Isotope Ratios used to Determine Sources of Mercury to Fish in Northeast U.S. Streams

Project
Colorado River Near Moab, Utah (small)

The Impacts of Climate Change and Water Supply Management on Fish in the Colorado River

Was this page helpful?