About
Big Kahuna Tropical Fish sits in a warehouse-style building in Madison, WI, with its entrance tucked around the back of the lot — look for the sign that points the way. Once you find it, you'll discover one of the largest aquatic selections in the Madison area, a sprawling aquarium store that runs roughly half freshwater and half saltwater. Reviewers point to the same things again and again: clean, well-maintained tanks, healthy livestock, and a crew that genuinely knows the hobby.
Several note that fish are quarantined before they reach the sales floor, part of why so many customers report bringing animals home that go on to thrive. On the freshwater side, this is a dependable place to find tetras for sale in Madison, WI — one regular picked up a school of 24 that all survived, and another raves about his new lemon tetras. You'll also find bettas, live plants, and shrimp near me, along with cichlids and other species you won't spot at a typical pet store.
Saltwater and reef keepers get their own dedicated half of the shop: corals, marine fish and invertebrates, and pre-mixed RODI water that spares reef hobbyists from mixing their own. Whether the goal is an Amazon river biotope or a Nemo-and-Dory coral reef, the inventory runs deep. Beyond livestock, Big Kahuna stocks tanks, equipment, hardscape, and a solid range of frozen and dried foods, including their own house-branded food.
The staff are known for taking real time with people — one visitor described a 45-minute conversation about what caused a tank crash and how to fix it — and the shop runs in-store water testing to help troubleshoot chemistry. Prices land fair to competitive, with sales running often. 6 stars) describe patient, friendly help from people like Ty and his crew.
For Madison fishkeepers building a planted tank, stocking a reef, or just browsing the displays, it's worth the trip to the back of the lot.
What they offer
Fish & livestock for sale at Big Kahuna Tropical Fish in Madison, WI
Big Kahuna Tropical Fish stocks corals, reef fish, shrimp, betta fish, tetras, cichlids, invertebrates, aquarium plants and freshwater & saltwater fish for sale in Madison, WI. As an aquarium store serving Madison, WI, it also carries aquarium equipment, dry goods and fish food and offers water testing and fish quarantine.
- Livestock & products
- Services
- Specializes in
Highlights
What makes them special
- One of the Madison area's largest aquatic selections, split roughly half freshwater and half saltwater
- Fish quarantined before hitting the sales floor; reviewers consistently report healthy livestock
- Deep freshwater range — tetras, bettas, shrimp, live plants, and cichlids
- Saltwater half with corals, marine invertebrates, and pre-mixed RODI water for reef keepers
- Knowledgeable staff (Ty and crew), in-store water testing, and fair, sales-driven pricing
From keepers
Customer reviews
“Beat up and neglected fish eyeballs tore up fh was very beat up not a good first time experience”
— Jermy Cotton1.0a week ago“Good people, fish well taken care of and good variety”
— Nikki Jacobson5.02 weeks ago“Beautiful store with so much for your fresh or saltwater fish tanks! Our daughter loves her new betta fish! Clean store, healthy stock, and friendly prompt service.”
— Jennifer Slak5.02 weeks ago“Extremely helpful people who work here and are extremely kind. Talked to me for 45 minutes about what might’ve caused a tank crash and helped with possible solutions. Also their fish always appear to be healthy and while sometimes the freshwater plants seem to be a little bit rougher it’s usually when they have been there for a long time. My favorite fish store for sure :)”
— Justine D5.02 weeks ago“Fair selection of fresh water fish. But not what I was hoping for. The prices were fair.”
— Kevin Jung4.0a month ago“The best selection around Madison, regardless of salt or freshwater, from beginner to expert. They have everything you could want to do an Amazon river tank or a coral reef with Nemo and Dori. Got to go back to get more fish!”
— Lukas Peper4.02 months ago“Picked up a school of 24 tetra from here and had a great experience. All 24 tetra survived and were very healthy. These guys really care and know their stuff. Their selection is HUGE and their prices are very fair, actually they're prices are pretty great and often run sales! They have a great selection of frozen and dried foods as well. Give these guys a try, they run a great shop and are passionate about the hobby. Highly recommended!”
— Kee Vang5.02 months ago“Wonderful selection, knowledgeable staff”
— Chad Norton5.02 months ago“Amazing service, very knowledgeable employees, clean tanks, wide selection”
— Michelle Gavinski5.02 months ago“Great selection of fish and other aquatic animals. The staff are super helpful and the prices are very competitive.”
— C B5.02 months ago
Reference
Frequently asked questions
Note — Store information and services may change. Always call (608) 848-1288 to confirm current availability, hours, and services before visiting Big Kahuna Tropical Fish.