American Fisheries Society

The American Fisheries Society extends our support to the furloughed fisheries and aquatics professionals affected by the U.S. federal government shutdown. Read our full statement on the shutdown and its impacts on natural resources here fisheries.org/2025/10/afs-...

Kvarøy Arctic - Tomorrow's Catch Explore how sustainable fish farming in Norway is combining innovation, environmental care, and community impact. Meet the team behind Kvarøy Arctic’s high-tech aquaculture.

Kravøy Arctic is using lasers and camera systems to solve one of aquaculture’s toughest challenges: parasites.

This is innovation in action — and the future of sustainable salmon farming.

🎥 Watch the full film now on Tomorrow’s Catch: contentwithpurpose.co.uk/afs/tomorrow...

Cover of the September 2025 issue of Fisheries featuring kokanee salmon in Alaska, credit J. Ching.

In the latest #Fisheries: Strongholds for Pacific Salmon (open access), Reckoning with Coloniality in Alaska Trawl Fisheries (open access), Growth Patterns of Invasive Silver Carp in the Mississippi River Basin, Empowerment as a Goal for College Education, and more: academic.oup.com/fisheries/is...

Many thanks to @jeffkopaska.bsky.social of @amfisheriessoc.bsky.social for donating this #sturgeon puzzle artwork to the NA Sturgeon and Paddlefish Society. The proud new owner, Thomas, from World Sturgeon Conservation Society will display this masterpiece in Vienna, Austria! nasps-sturgeon.org

Reconnecting Michigan’s Waterways Discover how dam removal and river restoration in Michigan are reconnecting habitats, revitalizing ecosystems, and honoring Indigenous values. Watch the story of the pond dam and the people restoring it.

A dammed river is often a dying river. In Michigan, CRA is removing dams, replanting native trees, and reactivating river access for communities. It’s the beginning of something better—for fish, forests, and future generations. 🎥 Watch the full CRA films: contentwithpurpose.co.uk/afs/tomorrow...

Distribution of viral hemorrhagic septicemia virus in the nearshore fish community of the St. Lawrence River ABSTRACTObjective. We investigated viral hemorrhagic septicemia virus dynamics in wild fish populations of the St. Lawrence River to compare host competenc

Viral hemorrhagic septicemia virus is a multi-host fish pathogen that has caused large, sporadic fish kills in the Great Lakes region. This study compares viral prevalence and titers among fish species that may represent viral reservoirs enabling long-term persistence. doi.org/10.1093/jaha... (8/8)

Open-population models provide an alternative trout monitoring method in the upper Yellowstone River, Montana ABSTRACTObjective. Long-term monitoring programs typically require standardization to evaluate changes in fish populations over time. However, incorporatin

In the upper Yellowstone River, changing hydrologic conditions prevent long-term trout monitoring from occurring in some years. Using POPAN models to analyze mark–recapture data from individually marked fish may provide an alternative method for long-term monitoring. doi.org/10.1093/najf... 7/8

Introduced piscivore scope for predation can limit the success of native fish reintroduction efforts ABSTRACTObjective. Rivers worldwide are heavily altered by human activities. The interactive effects of habitat alteration and introduced piscivores can je

Introduced fish predators may jeopardize river and native fish conservation goals. This study applies a well-known, flexible tool to create and evaluate factors potentially limiting coldwater fish restoration, including introduced predators and warmer river temperatures. doi.org/10.1093/tafa... 6/8

Efficient monitoring of a large river restoration project using a combination of remote sensing and field data ABSTRACTObjective. River restoration efforts continue to grow in spatial extent and complexity, though conventional monitoring methods are not designed to

Remote sensing and field data can be used to evaluate the success of large river restoration projects at improving salmon habitat and provide timely guidance to restoration practitioners and engineers on how to adaptively manage and improve restoration projects. doi.org/10.1093/najf... (5/8)

Migration of freshwater fish species and passage at a dam using a novel fishway ABSTRACTObjective. Decline of migrant freshwater fishes (potamodromous species) in the United States is a critical fisheries issue due to dams blocking mig

Many migrant freshwater fishes in the United States are in decline due to dams blocking them from completing critical life history migrations. A new fishway design used in an Indiana river shows promise: doi.org/10.1093/tafa.... (See a video here: contentwithpurpose.co.uk/afs/tomorrow...) (4/8)

Spatiotemporal shifts in American Eel population in a changing Hudson River estuary ABSTRACTObjective. Estuarine fishes experience significant diel and seasonal variations in their environments, with climate change introducing additional s

The Hudson River estuary supports one of the most robust remaining American Eel populations. Understanding the spatial effects of climate change in the estuary is crucial for effectively conserving this endangered fish. doi.org/10.1093/tafa... (3/8)

Assessing the potential for Smallmouth Bass population establishment in Grand Canyon ABSTRACTObjective. The expansion of nonnative Smallmouth Bass Micropterus dolomieu into the Grand Canyon ecosystem downstream of Glen Canyon Dam is widely

Smallmouth Bass pose a potential threat to at-risk Humpback Chub in the Grand Canyon ecosystem. How should we asses this potential threat, given that high turbidity in Grand Canyon may act as a natural barrier to sustained Smallmouth Bass recruitment? doi.org/10.1093/tafa... (open access) (2/8)

#WorldRiversDay might be over, but you can read more about river fisheries in the latest science published by AFS! From the Grand Canyon to the Hudson River, river fisheries face many challenges but researchers and managers are using high tech methods and new techniques to help protect them. (1/8)

You can read the entire open-access article here!
doi.org/10.1002/mcf2...

Best Paper in Marine and Coastal Fisheries - American Fisheries Society Ecosystem‐level reference points: Moving toward ecosystem‐based fisheries management, by Wendy E. Morrison, Stephanie A. Oakes, Melissa A. Karp, Max H. Appelman, and Jason S. Link

In this week's #FishyFriday, @jeffkopaska.bsky.social discusses the 2024 winner of Best Paper in Marine and Coastal Fisheries - "Ecosystem‐level reference points: Moving toward ecosystem‐based fisheries management": fisheries.org/2025/09/best...

David Shiffman - Tomorrow's Catch Discover why sustainable seafood and ocean conservation go hand in hand in this film with Dr. David Shiffman, where science leads the way in protecting marine ecosystems and livelihoods.

“The science is clear—we can have sustainable seafood and healthy oceans.” — @whysharksmatter.bsky.social‬

Watch this film on why saving the sea doesn’t mean giving up seafood.

🎥 Explore more from #TomorrowsCatch: contentwithpurpose.co.uk/afs/tomorrow...

A sustainable fishery isn’t just a label.

@mscecolabel.bsky.social reveals the science, collaboration & long-term work behind their certification — and why it matters.

Watch the film and explore the full #TomorrowsCatch series: contentwithpurpose.co.uk/afs/tomorrow...

AFS is back with a new "Beneath the Surface" podcast! We're highlighting 2025 Excellence in Public Outreach honoree, David Shiffman @whysharksmatter.bsky.social. He shares insights on social media best practices and why sharks matter! Listen now: americanfisheriessociety.podbean.com/e/2025-excel...

Interested in learning more about the Kynard Fishway? Check out this new article in TAFS! doi.org/10.1093/tafa...

Read the paper itself here: doi.org/10.1002/aah....

FIGURE 1: Diagrammatic representation that depicts the process of detecting infectious hypodermal and hematopoietic necrosis virus (IHHNV) by using a real‐time triplex loop‐mediated isothermal amplification (LAMP) assay. This assay employs three sets of primers totaling 18 primers, which target 24 specific regions of the IHHNV DNA within a single reaction. The optimal conditions for the assay, excluding the DNA preparation step, were identified as 63°C for 45 min. The results of the assay can be conveniently read using a portable turbidimeter.

In this week's Fishy Friday, @jeffkopaska.bsky.social discusses the 2024 winner of Best Paper in the Journal of Aquatic Animal Health: fisheries.org/2025/09/best...

LAST DAY! Propose a session for the 2026 joint conference of the International Association for Great Lakes Research and the Society of Canadian Aquatic Sciences. The conference will be held May 25–29, 2026, in Winnipeg, Manitoba, as a hybrid event. https://bit.ly/4lpMJNK

#IAGLR26 #ConnectedWaters26

BK-Riverfish - Tomorrow's Catch Discover how BK-Riverfish is restoring fish passage in America’s rivers with an affordable, modular fishway that reconnects habitat and supports native stream fish conservation.

The BK Riverfish @bk-riverfish.bsky.social ladder is restoring whole fish communities — not just individual species.

See how it's helping reconnect rivers and protect biodiversity in Tomorrow’s Catch.

🎥 Explore more here: contentwithpurpose.co.uk/afs/tomorrow...

ociety for Freshwater Science (SFS) 2026 Annual Meeting Spokane, WA May 17-21 logo featuring a mountains, a waterfall, and a bridge in the background and salmon and aquatic insects in the foreground. Around the edge is the meeting theme: Gathering to build resilient watersheds and communities

We’re thrilled to announce the Society for Freshwater Science 2026 Annual Meeting!

💡Gathering to Build Resilient Watersheds and Communities
📍 Spokane, WA
📆 May 17–21, 2026

Explore our meeting website for program details, travel, accommodations, field trips & more:
🔗 www.sfsannualmeeting.org

Susquehanna University's Freshwater Research Institute - Tomorrow's Catch At Susquehanna University, students lead hands-on stream restoration that’s transforming ecosystems and launching careers in aquatic ecology and conservation science.

@susquehannau.bsky.social is shaping the next generation of freshwater scientists — through hands-on fieldwork and conservation action.

Explore their story in Tomorrow’s Catch, a new digital series from AFS and CWP: contentwithpurpose.co.uk/afs/tomorrow...

Featuring: @chesconserv.bsky.social

Weigh in on Behalf of America’s Backcountry | Theodore Roosevelt Conservation Partnership Hunters and anglers can help shape the future of our national forests.

Please consider the opportunity to comment on the proposal to rescind the 2001 Roadless Area Conservation Rule. Roadless areas conserve cold, clean headwaters and provide habitat for native fish. The public comment period is open through Friday, Sept 19. Learn more: www.trcp.org/2025/09/12/w...

Juvenile life history, migration, and habitat use of natural-versus hatchery-origin Chinook Salmon ABSTRACTObjectives. Our overall objective was to directly compare the early life history and migration patterns of hatchery- and natural-origin fish and de

Chen et al. 2025 (doi.org/10.1093/tafa...) shows that hatchery origin winter-run Chinook #salmon use less habitats than natural origin winter-run. So drawing habitat use conclusions from studying hatchery fish is flawed.

Four smiling people holding award certificates stand next to a sign for American Fisheries Society, photo taken at AFS conference in August 2025.

MN AFS members Solomon David of @garlab.bsky.social and Alec Lackmann, leader of the Otolith Lab at UMN Duluth both received an Award of Merit from the @amfisheriessoc.bsky.social Fisheries Management Section, recognizing significant contributions to management of nongame fishes. Congratulations!!

Multiscale analysis predicts native species presence based on habitat and nonnative species abundance AbstractObjective. The loss and degradation of aquatic habitat through fragmentation, water extraction, and climate warming contribute to declining native

#FishyFriday What allows native fish repatriations to be successful? What results in failure? The fish in question, the fish community, abiotic factors, and spatial scale-all of it.

To explore this, here is the 2024 TAFS Best Paper from @amfisheriessoc.bsky.social

academic.oup.com/tafs/article...

Jeff Kopaska - Tomorrow's Catch Jeff Kopaska of the American Fisheries Society shares why science, funding, and next-gen leadership are critical to securing the future of our fisheries. Watch his story now.

I want to be optimistic...But there are immense challenges—@JeffKopaska, AFS Exec Director. From climate impacts to funding threats, our fisheries are at a crossroads. Jeff shares how to protect these resources for the future. Watch now: contentwithpurpose.co.uk/afs/tomorrow... #TomorrowsCatch