Displaying items by tag: tennessee aquarium conservation institute
Aquatic rescuers help laurel dace dodge a drought on Walden Ridge
Tennessee Aquarium VP and Chief Conservation and Education Officer Dr. Anna George, right, and U.S. Fish and Wildlife Service Conservation Delivery Coordinator Geoff Call collect critically endangered laurel dace from a stream ravaged by a prolonged drought on the Cumberland Plateau. The rescue successfully relocated 105 adults into human care at the Tennessee Aquarium Conservation Institute’s headquarters near downtown Chattanooga. Photos by Doug Strickland/Tennessee Aquarium
Drought prompts emergency rescue of one of America’s most endangered aquatic species
Casey Phillips is a writer for the Tennessee Aquarium.
CHATTANOOGA — Few things trigger louder or more distressing alarm bells among freshwater biologists than watching a waterway dry up during a severe, prolonged drought. That’s especially true when the disappearing stream is home to one of America’s most imperiled fish.
In late July, reports of dramatically withered streams atop Walden Ridge north of Chattanooga spurred an emergency rescue operation to prevent the extinction of the federally endangered laurel dace, which scientists consider to be among the 10 most at-risk fish in North America.
This effort was carried out by representatives from the Tennessee Aquarium, the U.S. Fish and Wildlife Service, and the University of Georgia’s River Basin Center in coordination with the Tennessee Wildlife Resources Agency. In all, 105 adult laurel dace were removed from dangerously dry streams and successfully relocated to the Tennessee Aquarium Conservation Institute (TNACI) near downtown Chattanooga.
All but one of the collected fish survived the relocation and are now thriving in temporary human care, where they will remain until conditions in their few native streams are sufficiently improved for them to be returned safely.
This laurel dace (Chrosomus saylori) was among dozens other collected from a stream on Walden Ridge north of Chattanooga to save the fish from drought. In the last 12 years, this minnow’s range has drastically dwindled to just two streams, and scientists consider it one of North America’s 10 most imperiled fish species.
Bee especially kind to pollinators this week
A bumble bee (Bombus sp.) collects pollen from purpletop vervain (Verbena bonariensis) in a pollinator plot on the Tennessee Aquarium plaza in Chattanooga. Tennessee Aquarium
Aquarium celebrates Pollinator Week with activities and giveaways June 17-23
Doug Strickland is a writer for the Tennessee Aquarium.
CHATTANOOGA — Pollinators. They’re kind of a big deal.
From iconic monarch butterflies and humble honey bees to fast-flying hummingbirds and acrobatic ... lemurs?! ... the animals that help plants reproduce are collectively known as “pollinators.” Whether intentional or accidental, the actions of pollen-transporting species contribute tremendously to the health of their respective ecosystems and are responsible for a shocking amount of the food we eat.
The benefits of the human-pollinator relationship are a two-way street. According to the Pollinator Partnership, a nonprofit dedicated to raising awareness about the role pollinators play, pollinators are responsible for roughly one of every three bites of food we eat and propagate over 180,000 different plant species — including more than 1,200 food crops.
Baby sturgeon hit the river in latest phase of 25-year restoration effort
This juvenile lake sturgeon was one of 50 released into the Tennessee River from Chattanooga’s Coolidge Park on May 2. The lineage of the fish can be traced millions of years, but overfishing, dams and habitat destruction has led to widespread population declines throughout its natural range. Doug Strickland/Tennessee Aquarium
Lake sturgeon recovery links rivers and experts in Tennessee and Wisconsin
Doug Strickland is a writer for the Tennessee Aquarium in Chattanooga.
CHATTANOOGA — Just across from the iconic peaks of the Tennessee Aquarium on the shore of the Tennessee River, a group of scientists with the Tennessee Aquarium Conservation Institute gathered on an early May morning to restore a primordial fish to the state’s primary waterway.
One by one, they carefully navigated down a boat ramp at Coolidge Park before gently releasing juvenile lake sturgeon, each just under a foot in length, into the river’s shallows.
These 50 sturgeon were the final youngsters to be reintroduced from a class of hundreds of sturgeon fry that arrived at the Conservation Institute’s freshwater field station last summer. Their introduction to the Tennessee River represented the latest milestone of a decades-long conservation effort to restore this state-endangered fish.
Despite reclaiming their one-time home in the waters of the Volunteer State, these newfound Tennesseans began life some 850 miles north of Chattanooga.
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Extreme drought endangers fish species
Representatives from U.S. Fish and Wildlife Service and the Tennessee Aquarium Conservation Institute work together to rescue Barrens Topminnows imperiled by an exceptional drought in Nov. 2016. Tennessee Aquarium
Drought conditions threaten some of the nation’s most-endangered fish species
Casey Phillips is a communications specialist at the Tennessee Aquarium in Chattanooga.
CHATTANOOGA — The endless parade of sunny, cloudless days in Chattanooga for the last two months may seem like the stuff of dreams to anyone planning an outdoor activity. However, this fall has turned into a blue-sky nightmare for aquatic species living in smaller creeks and streams.
“Some of those headwater pools are going to dry up, and we’ll lose large numbers of populations,” said Dr. Bernie Kuhajda, an aquatic conservation biologist at the Tennessee Aquarium Conservation Institute. “It just doesn’t look good for our headwater fish communities out there. They’re really getting stressed.”
Less than half an inch (0.42 inches) of rain fell in Chattanooga during a 72-day span between Aug. 30 and Nov. 9, according to meteorological data recorded at Lovell Field. That’s just 0.16 inches more than fell in Death Valley, California, during the same period, according to the National Oceanic and Atmospheric Administration (NOAA).
As of the latest weekly report by the government’s U.S. Drought Monitor, most of Hamilton County is now considered to be experiencing a D4 or “exceptional” drought, the Monitor’s most severe drought category.
Bad news for endangered fish species like the Barrens Topminnow and Laurel Dace.
Homeward bound: local students release hundreds of lake sturgeon into Tennessee River
Conservation scientists with the Tennessee Aquarium Conservation Institute pose in the Tennessee River before releasing more than 600 juvenile lake sturgeon into the waterway. Tennessee Aquarium
CHATTANOOGA — After bulking up all summer on a steady diet of bloodworms and brine shrimp, hundreds of juvenile lake sturgeon finally were returned to their ancestral waters this morning.
Under a nearly cloudless autumn sky, biologists from the Tennessee Aquarium Conservation Institute and third through fifth grade students from Girls Inc. of Chattanooga’s Fall Break Camp gathered on the north bank of the Tennessee River in Coolidge Park.
One by one, they carefully made their way to the river’s edge holding clear, water-filled plastic buckets containing five-month-old lake sturgeon. Amidst excited squeals and nervous laughter, they squatted down, gently depositing each sleek, armor-skinned fish into the shallows.
This latest release “class” included 667 lake sturgeon. Comparatively tiny now, these miniature river giants have the potential to reach nine feet in length and could live for up to 150 years.
Reintroduction events like this are the capstone payoff to a summer spent tirelessly caring for and — most of all — feeding these sturgeon, says Reintroduction Biologist II Teresa Israel.
“It’s really special. It’s hard to see them go, but it’s a happy day since we’ve seen them get so big, so we know they’ll be successful out there,” she said. “It’s a great accomplishment that completes the circle for all our hard work.”
Lake Sturgeon are considered endangered in Tennessee. As recently as the 1970s, this species had disappeared from both waterways due to the impacts of damming, poor water quality and over-fishing. Today’s release is the latest in the now-23-year-old effort to bring Lake Sturgeon back to the Tennessee River and Cumberland River.
Tennessee Aquarium brings more baby sturgeon into the world
A young lake sturgeon is viewed through a photographic aquarium after arriving at the Tennessee Aquarium Conservation Institute. Tennessee Aquarium
Tennessee Aquarium welcomes 2,500 baby lake sturgeon as restoration effort turns 25 years old
Casey Phillips is a communications specialist at the Tennessee Aquarium in Chattanooga.
CHATTANOOGA — The approach of summer coincided with the arrival of thousands of juvenile lake sturgeon in the Tennessee Aquarium Conservation Institute.
Biologists at the Aquarium’s freshwater field station welcomed 2,500, 2-inch babies into their care. After a steady diet of bloodworms and brine shrimp, bringing the fish to at least 6 inches, they will be reintroduced into the Tennessee River.
These tiny fish hold tremendous promise. Adult lake sturgeon may reach lengths of 8 feet and live 150 years.
“They start out really small, so it’s shocking to think how big they can get,” says reintroduction biologist Sarah Kate Bailey. “The first year of life is when they grow the quickest.
“They grow so fast while we have them here. You’ll go home for the day, come in the next morning, and they look like they’ve grown overnight.”
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Tennessee Aquarium wants to up the pollination game
Pollinator Pathway signs on the Tennessee Aquarium Plaza in Chattanooga lead guests on a self-guided tour highlighting native plants, pollinator behaviors, and unusual pollinators. Courtesy Tennessee Aquarium
TDOT joins with Tennessee Aquarium to pollinate our pathways
CHATTANOOGA — With their distinctive orange and black patterns, gossamer wings and harrowing 3,000-mile migrations, few insects are as charismatic or beloved as the monarch butterfly.
Just imagine how tragic it would be if they disappeared.
So it was with alarm in 2022 that the world received news that the International Union for Conservation of Nature (IUCN) had declared the monarch an endangered species, citing population numbers that had fallen 80 percent since the 1980s.
Similar anxiety met reports in the mid-2000s of colony collapse disorder. This sudden phenomenon dramatically imperiled the survival of European honey bees, whose activity directly or indirectly affects roughly one of every three bites of food we eat, according to the U.S. Department of Agriculture.
Pollinators are undoubtedly critically important to plants and humans alike, whether they’re investigating our Irises, calling on our Columbine, or buzzing our Blueberry bushes. This week, June 19-25, the world celebrates Pollinator Week, which recognizes the wondrous, vital contributions of butterflies, bees, moths, bats, and other pollinators.
Southeast Tennessee ridges and rivers will benefit from $10m infusion of federal natural resource funding

Targeted collaborative conservation will help local agricultural operations improve soil and water quality and protect aquatic life
CHATTANOOGA — Tennessee is as much a patchwork quilt of farms as it is an intricately woven lacework of streams and rivers. Soon, farmers and the aquatic life living alongside them will reap the benefits of $10 million in federal funds to support water-friendly agricultural improvements in the rolling uplands of the state’s southeastern corner.
The U.S. Department of Agriculture (USDA) approved the allocation of more than $197 million to support Regional Conservation Partnership Programs (RCPP) throughout the nation. These initiatives promote coordination between USDA’s Natural Resources Conservation Service (NRCS) and partnering organizations that are already engaged in conservation efforts.
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Nursing vanishing sharks far from the sea

Tennessee Aquarium hatches endangered shark species
CHATTANOOGA — The Tennessee Aquarium reached a significant milestone just in time for Shark Week with the recent hatching of three critically endangered short-tail nurse shark pups.
The diminutive youngsters, which hatched July 7, are the product of three adult short-tail nurse sharks — one male and two females — which arrived at the aquarium along with eight juveniles and eight fertilized eggs from a facility in Canada last year.
Tennessee Aquarium diversifies its scientific assets
Jim Hill Fellow for Conservation Breelyn Bigbee holds a viewing window with a logperch in Long Swamp Creek while conducting fieldwork in search of bridled darters near Jasper, Georgia. Tennessee Aquarium
Tennessee Aquarium fellowships bring minorities into the science space
CHATTANOOGA — Never let it be said that all summer jobs are created equal.
Squatting on his heels to dangle the flexible hose of an environmental DNA pump into a briskly flowing North Georgia stream, the last few weeks have been anything but ordinary for Spencer Trimpe. With the pump’s droning motor steadily collecting a sample of water to filter out genetic traces of the stream’s inhabitants, he doesn’t bother holding back a smile.
A lanky junior biology major from Thomas More University, Trimpe is one of two students selected as part of the Tennessee Aquarium’s George Benz Aquatic Ecology Fellowship. Instead of manning a cash register or waiting tables this summer, he’s assisting freshwater scientists from the Tennessee Aquarium Conservation Institute with a variety of research projects.
Tennessee Aquarium marks a milestone in its effort to bring native brook trout back to mountain streams
Reintroduction Assistant Kaylee Clayton, left, Jim Hill Fellow for Conservation Anthony Hernandez, center, and Reintroduction Biologist Teresa Israel cross a stream during a Southern Appalachian brook trout release. Tennessee Aquarium
Emblematic brook trout get a second chance at home in Southern Appalachian streams
Casey Phillips is a writer for the Tennessee Aquarium.
CHATTANOOGA — A team from the Tennessee Aquarium, Tennessee Wildlife Resources Agency and Trout Unlimited hiked along — and occasionally waded through — a pristine tributary of South Fork Citico Creek in Cherokee National Forest.
Navigating an obstacle course of tangled mountain laurel branches and moss-slickened boulders in late May, the team followed the stream as it gently descended through the Appalachian uplands. When a calm pool or shaded rocky overhang presented itself, they paused to dip their nets into five-gallon buckets filled with wriggling juvenile Southern Appalachian brook trout.
These little fish, raised to about two inches over six months, were the focus of more than six months of work at the Tennessee Aquarium Conservation Institute and the impetus for the hours-long trek into the East Tennessee woods.
Dinosaurs released in Chattanooga to honor Earth Day 2022
Tennessee Aquarium Director of Hospitality and Marketing Meredith Roberts and her daughter Lucy release a juvenile lake sturgeon during an Earth Day event on the Chattanooga riverfront. Tennessee Aquarium
Tennessee Aquarium releases endangered sturgeon on a fin and a prayer
CHATTANOOGA — Lake sturgeon are living fossils.
They are dinosaur fish. They have no scales. They are protected by a tough skin with boney plates, and are unchanged for millennia. They are part of a widespread related group of fish, with 23 species worldwide, and are an endangered species in Tennessee.
Tennessee Aquarium staff released some of these dinosaurs into the Tennessee River here on Earth Day, observed this year on April 22. Aquarium staff were joined by 30 students from Calvin Donaldson Elementary School and the public to release 65 juvenile lake sturgeon into the Tennessee River at Chattanooga’s Coolidge Park.
Tennessee Aquarium floats citizen-scientist app to extend the reach of public research
A black crappie is seen in the Tennessee Aquarium. Citizen scientists across the region can now plug their fish findings into a new database. Courtesy Tennessee Aquarium
So you want to be a citizen scientist? There’s a new app for that!
The Tennessee Aquarium Conservation Institute wants to assess the status of various fish populations throughout the Southeast so it released a new app to help outdoor folks and anglers identify the fish they spot, report the sighting, and enter their discoveries into a regional fish database.
The Freshwater Information Network (FIN) accepts and includes data for three major watersheds: The Tennessee and Cumberland rivers, and Mobile Bay.
Tennesseans may be familiar with the two rivers, but may think of Mobile Bay as a distant place with no connection to them, but its headwaters touch Tennessee in the Conasauga River. With its geographic isolation, the Conasauga is home to species of fish found nowhere else in the world.
Hai! It’s a summer baby cuteness boom at the Tennessee Aquarium
The Tennessee Aquarium’s Gentoo penguin chick weighs more than 2 kilograms at 28 weeks old. Casey Phillips/Tennessee Aquarium
Baby penguin, endangered turtles and puffer fish are the newest additions to the Tennessee Aquarium
(Casey Phillips is a communications specialist at the Tennessee Aquarium in Chattanooga)
As any parent knows, kids tend to do whatever you least expect. In the case of an endangered four-eyed turtle hatchling at the Tennessee Aquarium, however, merely existing was — in itself — a huge surprise.
On July 11, a volunteer was tending an enclosure in a backup area of the River Journey exhibit. This habitat was only supposed to house a female endangered four-eyed turtle (Sacalia quadriocellata, a largely montaine species native to parts of China and Vietnam), but the volunteer soon discovered that the adult turtle wasn’t alone. Perched atop a layer of vegetation was a tiny hatchling that, by all accounts, shouldn’t have been there.
“The adult female hadn’t been with a male in over a year, so we did not check to see if she had laid this year,” says Bill Hughes, the aquarium’s herpetology coordinator. “To say the least, finding an egg, let alone a hatchling, was unexpected.”
Tennessee Aquarium Herpetology Coordinator Bill Hughes holds a recently hatched endangered four-eyed turtle. Casey Phillips/Tennessee Aquarium
Tennessee Aquarium and partners are stocking another East Tennessee mountain stream with imperiled Southern Appalachian brook trout
Juvenile brook trout swim into the water of their new home during a joint effort to return the species to its rightful range in the Tellico River watershed in the southeastern Cherokee National Forest. Photo courtesy Tennessee Aquarium.
In a virtuous cycle of life, native brookies return to Tellico River watershed in southeastern Cherokee National Forest.
(The writer produced this original piece for the Tennessee Aquarium).
Navigating through a thicket of branches while clambering across slick boulders in a rushing mountain stream is a difficult task in the best of times. Doing so while attempting to balance 40-pound buckets of water filled with imperiled fish takes the challenge to an entirely new level.
A team of scientists from the Tennessee Aquarium Conservation Institute drove to one of the lush, high-elevation streams in the southern reaches of the Cherokee National Forest. During a brief lull between rainstorms, they were joined by Tennessee Wildlife Resources Agency representatives and the U.S. Forest Service to celebrate a homecoming for 250 long-lost residents of this gorgeous landscape: juvenile Southern Appalachian brook trout.
Carefully navigating through a snarl of streamside vegetation, participants paused to release five or six trout at a time into pools with overhangs where the young fish could hide from predators and ambush floating insects that washed into the stream. The going was tough, but those involved in the effort to restock almost a kilometer of this pristine creek say the challenge was worth the reward of seeing Tennessee’s only native trout back in its ancestral waters.
“The days when we release fish, especially brook trout, are really special moments,” said Tennessee Aquarium Aquatic Conservation Biologist Dr. Bernie Kuhajda. “We’re with these fish all the way from when we first bring adults into the Conservation Institute to spawn, to watching the eggs start to develop, to the juveniles that are just a few inches long and ready to release here.
“It really is knowing that we get to help restore trout to the full circle of life. Days like today are the culmination of all that work to put trout back into the Southeastern streams where they belong.”
Like many Appalachian streams, this tributary of the North River in the Tellico River watershed hasn’t hosted the brook trout for almost a century. Clearcutting of forests in the early 1900s made waters in the region too warm. Combined with the introduction of brown and rainbow trout, “brookies” were effectively lost from more than 75 percent of the waterways where they once thrived.
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