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Explore Search: Fish and Aquatic Species

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Photography
Photo of a brook trout observed in Owens Creek, Maryland

Brook trout observed in Owens Creek, Maryland

Photography
USGS researchers are inspecting small fish specimens to identify their species.

USGS researchers identifying sculpin species

General
coiled up eel laying in a fishing net

Eastern Ecological Science Center partnership with Atlantic States Marine Fisheries Commission

Project
Lionfish are spreading through the Western North Atlantic, Caribbean Sea, and the Gulf of Mexico

Non-native Marine Fishes: Tracking Distributions with the USGS Nonindigenous Aquatic Species Database

Research
A fish passage study on American shad.

Eastern Ecological Science Center partnership with Atlantic States Marine Fisheries Commission

Data Release
Collage of images of an earthquake, scientists in flood with instruments, a volcano erupting, and seismic illustration.

Native ranges of freshwater fishes of North America

publication
image of publications layered on a wooden table

Effects of twenty-five compounds on four species of aquatic fungi (Saprolegniales) pathogenic to fish

Research
American Shad

Alosine Genetic Stock Identification and Tissue Repository

publication
image of publications layered on a wooden table

Toxicity of carbon dioxide to freshwater fishes: Implications for aquatic invasive species management

Project
Spawning Reef Restoration for Native Lake Sturegon in St. Clair River

Aquatic Native Species and Habitat Restoration: Custodial Maintenance of Fish Spawning Reefs

Project
Male atlantic salmon showing a kype in lower jaw

Aquatic Native Species and Habitat Restoration: Restoring native freshwater fish populations

Featured Films and Shorts
Cover image for Climate Science Champions series

Climate Science Champions, Episode 6: Vanessa von Biela, Research Fish Biologist (AD)

Featured Films and Shorts
Cover image for Climate Science Champions series

Climate Science Champions, Episode 6: Vanessa von Biela, Research Fish Biologist

Research
Blue catfish specimen

Invasive Blue Catfish Science to Support Conservation and Fisheries Management

Research
Delaware River

Warm Freshwater Ecosystems

Research
Blue Ridge Sculpin

Assessing native fish restoration potential in Catoctin Mountain Park

Project
Active reef construction in the Detroit River near Fort Wayne.

Aquatic Native Species and Habitat Restoration: Post-construction Evaluation of the Detroit River, Fort Wayne Fish Spawning Reef

publication
image of publications layered on a wooden table

Measurement of milt quality and factors affecting viability of fish spermatotzoa; Cryopreservation aquatic species

publication
image of publications layered on a wooden table

USGS Nonindigenous Aquatic Species database with a focus on the introduced fishes of the lower Tennessee and Cumberland drainages

publication
image of publications layered on a wooden table

Nonindigenous aquatic and selected terrestrial species of Florida. Report to U.S. Fish and Wildlife Service

Podcasts
Color image of Cassie Nickles, Shruti Khanna and Becca Gustine with the graphic for the USGS EROS podcast "Eyes on Earth"

Eyes on Earth Episode 70 - ECOSTRESS and Aquatic Ecosystems

Research
brook trout

Enabling AI for citizen science in fish biology

publication
image of publications layered on a wooden table

Balancing aquatic habitat fragmentation and control of invasive species: Enhancing selective fish passage at sea lamprey control barriers

Research
Surveying for dwarf wedgemussels

Ecological flow needs of freshwater mussels

publication
image of publications layered on a wooden table

Fish species of greatest conservation need in wadeable Iowa streams: current status and effectiveness of Aquatic Gap Program distribution models

Research
Trout with “blacktail” associated with whirling disease.

Trout with “blacktail” associated with whirling disease

Featured Films and Shorts

Katharine Kolb: Activities Of A Geographer

Research
Alex Haro working with Atlantic sturgeon

Fish Behavior

Research
Juvenile brook trout

Assessing the effects of chloride exposure on aquatic organisms

Presentations and Events

Impact of Future Climate and Non-Natives on HI's Aquatic Ecosystems