Explore every episode of the podcast Fish of the Week!

Get to know the smallest landlocked parasitic lamprey in the world! This tiny Oregon native, found only in the upper Klamath Basin, has a fascinating story of evolution, persecution, and return. Katrina, Guy, and guest Ben Clemens (Statewide Lamprey Coordinator for the Oregon Department of Fish and Wildlife) dig into the science and history of this species and mull over philosophical questions regarding lamprey origins, public perceptions, and science communication.

You might also like our these episodes:

• S1:E5 - Alaska's lampreys
• S2:E3 - Sea Lamprey
• S2:E44 - Pacific Lamprey
• S3:E17 - Ancient eats/royal lamprey pie

Get to know the Chesapeake Logperch: a cigar-shaped fish with a button nose for flipping rocks and an interesting story. Bonus: a deep dive into the Endangered Species Act species status assessment process. Our guests are Dr. Jay Stauffer (Penn State Distinguished Professor), Steve Davis (Lead Fish Culturalist at our Northeast Fisheries Center), and Richard Novak (Biologist at our Pennsylvania Field Office). We hope you enjoy!

Get to know Oregon Chub, one of only two species in Oregon's endemic genus Oregonichthys. This incredible boom-n-bust, mosquito-eating pioneer happens to love the same off-channel habitats emblematic of Oregon's rich heritage that myriad native birds, amphibians, juvenile salmon, and wildlife rely upon. Our guests Matt Collver (Oregon Department of Fish and Wildlife's Native Fish Investigation Program) and Brian Bangs (U.S. Fish & Wildlife Service's Oregon Fish and Wildlife Office) lead Katrina and Guy down a chub hole of discovery and the secrets of recovery: a major decline while nobody was watching, landowner's "chubs in tubs" efforts, and more!

Get to know the Grass Carp, a behemoth of a vegetarian with its very own "coming to America" story. Katrina and Guy delve into how it's situated on the fish family tree, compare and contrast it with other invasive carp and goldfish, and unveil the latest fan mail requests.

Meet the gem of the Georgia Piedmont, the Yellowfin Shiner! On this episode we learn all about the color-popping spawning habits of Yellowfins and other species in the Hydrophlox genus, their association with nest-building species like Bluehead Chubs and stonerollers, and where to spot them. You'll also get tips on successfully keeping native fish in aquaria and how to make friendships with other fish nerds. Our guests are Michael Wolfe with the North American Native Fishes Association and Bryson Hilburn from the University of Georgia and this episode is dedicated to one of our listeners.

Meet the Kala, also known as the Bluespine Unicornfish! From the horn on its head to its blue spines and tail tassels, this leathery-skinned fish is a wonder to behold and a culturally-important species in Hawaii. You'll learn about the limu-eating habits of this fish and what is known about its age and growth, the practice of "pono" science, how management informed by lawai'a, how to be a good visitor within Hawaii's ahupua'a's, and what is still to be learned about this species! Our guest, Maria "Baba" Angst from Moloka‘i, is with Hawaii's Department of Land & Natural Resources, Division of Aquatic Resources.

Get to know the Peppered Shiner: a beautiful little endemic fish that holds a special seat in the waters of Arkansas and Oklahoma, particularly in Arkansas' Saline River where it can still be reliably found. We discuss the habits and preferences of this fish, its place in shoaling communities and where it lives, and what people can do to help ensure it doesn't blink out. We also learn about the challenges of aging juvenile minnows and what questions still need to be answered. This week's guest is Clemson PhD student Mack Calvert.

Get to know the humble and overlooked little Bay Anchovy: one of the most abundant and ecologically vital fish in most mid-Atlantic estuaries. This fish is on the menu for everyone from Striped Bass to Bluefish, sea birds to marine mammals. Is it also on pizza? You'll have to listen to find out. Our guest, Brian Boutin from our Chesapeake Marshlands National Wildlife Refuge Complex, discusses the importance of this fish and coastal estuaries to Americans and myriad fish and wildlife.

Get to know the Golden Mahseer, a large freshwater fish native to fast-flowing rivers in the Himalayan region that feels the watershed-wide impacts of events like the recent catastrophic debris flow and flash flood in Nepal (this episode was recorded just prior to the catastrophic glacial collapse). We dive into the value of this fish and why it's important to think globally when it comes to learning about migratory species. Our guest Julie Claussen is a scientist and science communicator.

Get to know the biggest member of the genus Moxostoma: the Greater Redhorse! This impressive native sucker species is accessible, fun to catch, and not intimidating to handle. We discuss how sight-fishing and focusing on the up-close details and beauty of fish can inspire art and offer an escape from the daily grind. Our guest Devon is an avid angler, fish artist, and Greater Redhorse fan.

If you like this episode you might also like:

• S2:E15 - Ugiidatli (Sicklefin Redhorse)
• S5: E25 - Shorthead Redhorse
• S6: E15: Golden Redhorse

Get to know an extremely tough desert fish found only in one lake in southeastern Oregon. You'll learn about its amazing ability to withstand both hot temperatures and high levels of arsenic, the history of the lake and its conservation, and what questions are still left unanswered. Our guest is Fred Monzyk with Oregon Department of Fish and Wildlife's Native Fish Program.

Get to know the reef donkey! This big, powerful fish will "slap you around a bit and give you some fish rash." Katrina and Guy are joined by guests Mischa Schutz and Creed Branham, who share their knowledge about the ecology and movement patterns of this fish, fishing tips, unexpected culinary tricks, what it's like to go through the scientific peer review process as a graduate student, and more! On deck: Borax Lake Chub

Dive Deeper: The Greater Amberjack Count: Studying the greater amberjack in the U.S. South Atlantic and Gulf of America

Get to know the goatfishes and their special place in Hawaiian culture. From keiki fishing for ʻōama with cane poles to the deeper meaning behind the endemic kūmū, we explore the efforts across the Hawaiian Archipelago to connect with and conserve these wonderful fish. Our guest is Jake Reichard with Hawaii's Department of Land and Natural Resources' Division of Aquatic Resources.

Meet one of the few fish that's managed to cross America's Continental Divide: the Yellowstone Cutthroat Trout! On this episode we explore the variation in ecology and morphology of this beautiful fish across its range, its history in Yellowstone National Park and efforts to move it by wagon and train, how its been impacted by nonnative trout species, where to catch it, and the value it holds within the Wind River Indian Reservation. We are joined by fish biologist Mike Mazur with our Lander Fish and Wildlife Conservation Office in Wyoming.

We want you to imagine a souped up tilapia the size of a tire, hanging by a buoy. Head to Mississippi to fall in love with the Atlantic Tripletail, a fish of many names ("sleepy fish" and "buoy fish") that can deliver a powerful kick on the end of your line. Katrina and Guy are joined by Trevor Moncrief and Eric Gigli with the Mississippi Department of Marine Resources. Topics include where to find this fish, what's known about its behavior and preferences, fishing strategies, how it's managed, and how anglers can help contribute to a growing body of knowledge and appreciation for this very cool fish.

Meet Washington State's only freshwater endemic fish: the Olympic Mudminnow! Despite being found nowhere else in the world, many questions about this quintessential Washingtonian species remain unanswered! On this episode, you'll get to know the habits, preferences, and close relatives of this beautiful little ambush predator. Ecologist Lauren Kuehne is our guest.

How well do you REALLY know one of the most popular fish the USA? What's the science behind its neon blue stripe? Where does it come from? What conditions does it prefer? Katrina and Guy get curious about this freshwater aquarium fish that Americans love so much.

Meet the Butterfly Kingfish AKA Butterfly Mackerel: the hottest fish you've never heard of! This not-well-studied fish is the sole species in the monotypic genus Gasterochisma, and the oldest lineage of Scombridae (the mackerel, tuna, and bonito family). Katrina, Guy, and guest Fernando Melendez Vazquez from the American Museum of Natural History in New York City dig into the details about this large, endothermic oddball and the broader topic of warm-bloodedness in fishes.

Get to know the Redbreast Sunfish and catch up on some fan mail, where Katrina and Guy read listener's fish requests and feedback! Learn how to tell this fish apart from other sunfish species, where to find Redbreasts, and gain some excellent fishing tips.

Get to know the minnow that "has the most normal looking head of any minnow" - the Weed Shiner! There's a lot of mystery surrounding this overlooked native fish, which, in addition to being a tasty treat for sportfish like Largemouth Bass and Bluegill, can tell us a lot about the success of habitat restoration efforts. Guest Ben Patschull from the Wisconsin Department of Natural Resources (DNR) tells an inspiring comeback story about this fish in "Pool 8" of the Upper Mississippi River.

Get to know the Gizzard Shad, a native fish that eats mud, feeds sportfish, and has something in common with birds! On this episode we delve into the ecology of this fish (including competition with invasive carp and positive interactions with native mussels), its nuanced role in nutrient cycling, and how the public perceives and interacts with Gizzard Shad. We've even got some math for folks who like working with numbers and want to optimize decision-making in fisheries. Our guests are Mike Vanni from Miami University and Richie Erickson from the USGS Upper Midwest Environmental Science Center.

Get to know the only surviving member of genus Empetrichthys, the desert-dwelling Pahrump Poolfish! This Nevada native is not nearly as well-known as its neighbor, the Devils Hole Pupfish, but similarly is endangered and endemic to isolated, highly specific desert habitat. In six seasons of Fish of the Week, this is the FIRST species we've covered in the family Goodeidae! Our guests are fish biologists Kevin Guadalupe from the Nevada Department of Wildlife's Native Fish and Amphibian Program and James Harter from our Southern Nevada Fish and Wildlife Office. You'll get a slice of history, hear about a creative and collaborative conservation approach, and leave with hope for the future.

You might also enjoy these episodes:

• S1:E46 - Devils Hole Pupfish: A Tiny Oasis
• S2:E14 - Rio Grande Suckers
• S2:E30 - Long Valley Speckled Dace: Cryptic Desert Fish
• S4:E39 - Owens Pupfish: Blue California Jewel
• S5:E19 - Rio Grande Silvery Minnow

Get to know the habits of the Blacktip Shark and why they aggregate so close to shore. Just in time for summer, Katrina and Guy visit with shark expert Stephen Kajiura from Florida Atlantic University about shifting baselines and why these sharks are adjusting their migration farther north up the East Coast. We discuss how scientists study these sharks, what drives their migration, beachgoing safety tips, fishing considerations, and what it's like to be a shark biologist.

If you like sharks, you might enjoy these episodes as well:

• S1:E29 - Salmon Sharks
• S2:E42 - Goblin Sharks
• S3:E29 - Greenland Sharks
• S4:E23 - Pacific Sleeper Sharks
• S4:E30 - Blacktip Reef Sharks
• S4:E49 - Cookiecutter Sharks

The scene is set: two neighbors with very different ways of living. One is large, long-lived, free-to-roam, blimp-like. The other: small, shorter-lived, confined, butter-like. These are the people's fish, occupying international waters and places on earth that are quite impossible for us to truly experience from the perspectives of these amazingly adapted, beautiful fish. Get to know the "albatross" of the abyssal plain, the unfortunately (or fortunately?) named Robust Assfish, AND the Atacama Trench Snailfishes in our first ever compare and contrast episode.

Our guest, Dr. Thom Linley, is Curator of Fishes at the Museum of New Zealand Te Papa Tongarewa and co-host of The Deep-Sea Podcast.

Other episodes you might like:

• S3:E25 - Mariana Snailfish: Trench Fish Extraordinaire
• S4:E13 - The Unassuming Bony-eared Assfish!

Read more:

Fishes of the hadal zone including new species, in situ observations and depth records of Liparidae: https://www.sciencedirect.com/science/article/pii/S0967063716300656

Independent radiation of snailfishes into the hadal zone confirmed by Paraliparis selti sp. nov. (Perciformes: Liparidae) from the Atacama Trench, SE Pacific: https://link.springer.com/content/pdf/10.1007/s12526-022-01294-0.pdf

Get to know the Gilt Darter complex! Katrina and Guy are joined by two guests from Yale University's Department of Ecology and Evolutionary Biology: Tom Near and Julia Wood. They imagine sitting down with the five species (Gilt, Masquerade, Brassy, Western Gilt, and Russet Darters) over dinner to understand the identity of each fish and how they're doing, dig into what makes a species a species, the definition of a species complex, and how the advancement of biodiversity discovery is important to conservation.

This week we're heading to New England to get to know its very large, blobby, thick-tailed electric ray that's super cool but not well-understood. In this episode, we get a peek into the torpedo ray's personality and deep dive into the how-tos and value of rescuing and necropsying stranded fish. Guy ponders if anyone has used uterine "milk" to make a cheese and Katrina wonders about historical accounts of these fish curing migraines and gout. Our guest is Carol "Krill" Carson from the New England Coastal Wildlife Alliance.

Prized for their blue spot and legendary as bait for big snook and other sportfish, the frowny-faced Fat Sleeper is valued wherever it is: judging you from your aquarium, breathing air from the top of its head while trying to avoid becoming candy for herons, predicting storms, or unlocking nutrients from mangroves to benefit the entire food chain. You'll learn how this fish is the ultimate survivor, where it lives, and all about its weird "storm minnow parade" and sticky eggs. Guest Eddie Perry joins from our Peninsular Florida Fish and Wildlife Conservation Office to build appreciation for this wonderful fish.

If you liked this episode, you might also like "Florida's Remarkable Opossum Pipefish" (S5:E14)

In waters that are "just right" across America, you can find colorful, unfamiliar fish living on the edge. Embark on a weird treasure hunt with Katrina, Guy, and guest Matt Miller from The Nature Conservancy to learn about Central American Convict Cichlids in Idaho to feral fancy guppies in George Washington's Bathtub and Jack Dempsey Cichlids in South Dakota. We explore American's bizarre relationship with certain fish, as well as tips for travel to and fishing hot springs. Unfortunately, this isn't a fairy tale: we also learn how introducing unwanted aquarium pets into hot springs puts our own unique native fish at risk.

Get the latest scoop on Northern Pike in Southcentral Alaska with Alaska Department of Fish and Game guest Parker Bradley. While this fish is highly sought-after and valued for subsistence and sport in the regions of Alaska where it's native, it is causing problems for salmon in Southcentral Alaska where it's been introduced. We deep dive into a nuanced look at how species can cause harm when they're put into new places, and what's being done to detect and manage populations in a very large and logistically-challenging environment.

Get to know the Golden Redhorse! They fight hard, they're beautiful, and they're a great fish to introduce kids to fishing (soft mouth, no spines). During this episode you'll gain strategies to see their migration and catch/cook redhorse, identify redhorse species in your neck of the woods, learn how anglers are helping scientists understand more about these fish through an amazing piece of anatomy called the otolith and more. Our two Minnesota-based guests are Drew Geving (Native Fish for Tomorrow) and Alec Lackmann (University of Minnesota Duluth's Otolith Lab).

Become the ultimate sucker lover by catching all of our sucker episodes!

• S2: E14 - Rio Grande Suckers
• S2: E15 - Ugiidatli / Sicklefin Redhorse
• S2: E22 - Bigmouth Buffalo
• S2: E41 - June Sucker
• S2: E46 - Blue Sucker
• S3: E5 + S4: E17 Razorback Sucker
• S3: E34 - Hogsuckers
• S3: E46 - Cui-ui / Pyramid Lake Suckers
• S4: E3 - C'waam / Lost River Suckers
• S4: E16 - White Sucker
• S4: E29 - Smallmouth Buffalo
• S5: E25 - Shorthead Redhorse

Get to know the Emerald Bowfin, one of two native species of bowfin found in North America! Always hungry and angry, this gamest of fish is a dedicated parent and will roll and jump spectacularly on the end of your line if hooked...and once landed, it about as close as you can get to holding a living dinosaur. Guests Griffin Blegen and Tyler Winter help Katrina and Guy dig into where this fish is found, its aggressive personality, how their dietary habits help you catch bigger bluegill, how to best cook bowfin at the water's edge, and why you absolutely should NOT throw this treasure on the bank like trash.

Get to know the American Star Drum: an abundant, silvery little bulldog-faced fish that feeds everything from popular sportfish to beloved birds and dolphins! Katrina and Guy are joined by two Georgia-based guests: Rachel Guy with the Sapelo Island National Estuarine Research Reserve/Georgia DNR and Bryan Fluech with the University of Georgia Marine Extension and Georgia Sea Grant. You'll learn about the biology of this fish and other lesser-known drums, the key role of estuaries, the Estuarine Fish Monitoring Cooperative, and coastal Georgia's fish/crustacean ID tool "What's My Bait."

Travel to North Carolina with Katrina, Guy, and guest Tyler Pait to get to know the beautiful Brook Trout of the Southern Appalachians! You'll learn about the habits of these fish, where you can still find them in the south, how to safely approach a high-elevation Brook Trout fishing adventure, and how folks with non-fish day jobs are making a difference (and how you can too!).

Head with us to the abyssal sea floor, a fascinating and important place with rolling hills, rock outcrops, and amazing creatures drifting by and sticking out of deep, fine mud.  This is where an abundance of fish with rat-like tails are feeling around and tracking the populations of surface dwelling fish above. Guest Jeff Drazen from the University of Hawai‘i at Mānoa joins Katrina and Guy to answer questions and help listeners understand what life is like at this depth.

Head to Birmingham, Alabama with us to get to know this fish and several other endangered urban darters. We explore the city and the well-known spring oases the Watercress Darter calls home, as well as the ways in which the community has rallied around their care. You'll hear from the man who first discovered and described this fish in 1965 and two guests from our Alabama Ecological Services Field Office. With so many darter enthusiasts within the Magic City, the future of this fish is bright just like its beautiful blue fins.

Get to know a beautiful and rare native species found in pockets of tea-like blackwater habitats along the East Coast. Katrina and Guy are joined by three guests from the Maryland Department of Natural Resources: Jay Kilian, Seth Moessinger, and Jason Cessna. Learn more about the fish, their patchy habitats, and the amazing work being done by a variety of partners and states to locate, understand, and give these fish a helping hand!

If you enjoyed this sunfish you might also like these episodes:

1. S2:E8 Longear Sunfish: Slab-Sided Beauty
2. S3:E6 Sacramento Perch: California's Heritage Sunfish!
3. S3:E28 Pygmy Sunfish: The Mini Seven
4. S4:E15 Green Sunfish: Aggressive Bigmouth

Read more: https://www.fws.gov/story/2026-01/bringing-blackbanded-sunfish-back-blackwater-habitat-maryland

Get to know the Pumpkinseed, "perfect in all its parts, looking like a brilliant coin, fresh from the mint." Learn what makes this fish tick, where to find it, how to catch it (in both open water and through the ice), and how fishing can take you to a happy place. Katrina and Guy are joined by Jeff Kopaska (Executive Director of the American Fisheries Society) and retired Minnesota fish biologist Mike McInerny.

In contrast to the clinical, objective science of descriptive taxonomy, naming a fish is the one time scientists can be creative, personal, poetic, whimsical, and even mysterious. We dig into the process and history of formally naming fish species. Our special guest, Christopher Sharpf (the brains behind the ETYFish Project), has researched the names of literally ALL THE FISH!! You'll particularly like this episode if you like history, are curious about etymology or language, and want to be inspired to find your own very unique "Everest" to tackle (in the name of fish).

What looks like a rock, vocalizes using its own bizarre internal instrument, and vibrates like a cell phone when picked up? Get to know the Rockhead Poacher: a fish that's developed a very special way to make itself heard in loud, acoustically complex tidepools along the Pacific coast. Whether you're a fish enthusiast, computer geek, gamer or art lover, this episode is for you. Fish biologist and recent LSU master's graduate Dan Geldof is our enthusiastic guest/guide.

Get to know the Saugeye! You'll get extensive tips how to angle for this fish, how it tastes, and what goes into producing this hybrid for fun fishing opportunities in Virginia. Katrina and Guy are joined by two guests from the Virginia Department of Wildlife Resources.

Get to know a notoriously difficult-to-detect Noturus species: the Piebald Madtom! Matt Wagner, a biologist from our Mississippi Ecological Services Field Office, takes us into the field to learn about this very neat little American catfish with a big sting!

Tune in this week as Katrina and Guy head to Alaska's Kuskokwim River! U.S. Fish and Wildlife Service guests Frank Harris and Aaron Moses describe this fish, its importance to people, the river + Yukon Delta National Wildlife Refuge, and the logistical challenges of studying fish in remote Alaska (MacGyver story included!).

If you like this episode, we've got another for you that offers an Iñupiat perspective and science from a different region of Alaska: S2:E47: Broad Whitefish: Trade and Table Fare

Get to know the Trout-Perch, an understudied yet important forage fish that makes its living across a large swath of North America! Katrina and Guy are joined by guests Ray Katula and Justin Lesser.

Co-hosts Katrina and Guy reflect on the past five seasons and take a sneak peek into season 6. Learn which 25 American fish top their lists and their shortlist of Mount Rushmore-worthy fishes. The episode ends with listeners' "fanmail darter" recommendations.

Get to know 'o'opu nākea, 'o'opu 'alamo'o, ‘o’opu nopili, ‘o’opu naniha, and ‘o’opu ‘akupa! From scaling waterfalls to farming algae, Hawaii’s native ‘o’opu gobies embody a mauka to makai (mountains to sea) way of living. These fascinating obligate amphidromous fishes (and our guests - Cory Yap, Cody Chacon, and Tim Grabowski), help us to open a window into Hawaiian culture, sense of place, and kuleana.

Check out these other Hawaii-focused episodes:

• S4:E43 Guests Andie Le Doux and Iokepa Frederick discuss the once-great coastal O'ahu mullet migration and conserving muliwai (estuary) environments.
• S4:E21 Awa (Milkfish) with guest Keli'i Kotubetey (Assistant Executive Director of Paepae o He'eia on the island of O'ahu)
• S3:E18 Guest William Aila discusses traditional and contemporary Hawaiian fishing techniques and dishes, management and conservation of tuna.
• S2:E18 Moi (Pacific Threadfin) + fishponds of Molokai with guests Uncle Mac Poepoe and Hi'ilei Kawelo

Get to know the invasive Round Goby! You'll learn about the history of this fish in the Great Lakes, their impacts, and how to tell them apart from native fishes like Mottled Sculpin and Johnny Darter. Our guests are Julie Nitz and Abby Wicks from Wayne State University.

Per listener request, get to know the fish so nice they named it twice! In this episode you'll learn about their fascinating coloration and behavior, fishing and underwater viewing strategies, and how to contribute to our collective understanding of the movements and lives of these fish by participating in one of the world's largest fishermen-driven tagging programs. Our guest is Wess Merten: Director of Beyond Our Shores Foundation and its Dolphinfish Research Program.

You might also like these episodes:

• S4:E41 - Sea Robin: Sustaining Seafood
• S4:E2 - Swordfish: Lessons From Sea
• S3: E48 - Atlantic Tarpon: Silver King
• S3:E23 - Red Snapper
• S3:E18 - Tuna: a Hawaiian Perspective
• S3:E3 - Opah: Warmest Fish in the Cold Blue Sea

Meet a rockstar of a fish who develops a big pink head adorned with tubercles during the spawning season. Not only that, it moves thousands of rocks into spawning mounds that benefit all kinds of other fish! This species and other chubs in the Nocomis genus are very important indeed. Guy and Katrina dig into this fish and recent fan mail.

Meet the official state fish of Texas and the gem of central Texas: the Guadalupe Bass! Native only to the clear, groundwater-influenced streams of the Texas Hill Country, this spunky fish is an amazing catch and will absolutely tear into your light tackle and crater your topwater.

Our Guest Chris Johnson from Living Waters Fly Fishing brings enthusiasm and passion for what the Texas Hill Country has to offer from a native fishing and place-based perspective. Come experience this special place and fish and while you're at it, get after your Hill Country double (Guadalupe Bass + Rio Grande Cichlid)!

You might also like these episodes:

• S2:E31 Rio Grande (Texas) Cichlid
• S2:E43 Beneath the City: North America's Blindcats
• S3:E13 Mexican Tetra
• S3:E49 Texas' Fountain Darter

Get to know a fan favorite! Katrina and Guy visit with guests Bo Baxter and Derek Wheaton from Conservation Fisheries to understand the habits and history of this tiny cog and wheel in our amazing, beautiful world. You'll learn how and where to best visit with and photograph bluemask and related darters underwater...and how Conservation Fisheries raises and feeds (!) tiny millimeters-long "set-of-eyeballs" babies to adults. If you're a fish or aquarium enthusiast, or a nature photographer, you'll enjoy this week's discussion.