Fins Up Reef Co. opened its doors in Littleton, Colorado in late 2024, and it's already being called one of the best saltwater stores in the state. Owner Ryan runs a tight operation just off C-470, with a focus on quality corals, saltwater fish, and reef tank services that has earned the shop a devoted following in the Denver metro area.
The first thing everyone notices is how immaculately clean the store is — multiple reviewers call it the cleanest aquarium shop in Colorado, and that's not hyperbole. The coral displays are well-lit and meticulously organized, showcasing everything from OG mushrooms and grail-level pieces to more accessible frags. Ryan has earned a reputation as a skilled coral propagator, and his pricing on high-end corals consistently undercuts online retailers.
The fish selection, while focused squarely on saltwater, features healthy livestock that reflects genuine care behind the scenes. What really defines Fins Up is Ryan's hands-on approach. He walks customers through every step of building and maintaining a reef tank — equipment recommendations, coral placement, water chemistry.
One customer recounted a freshwater fish emergency where Ryan tested their water for ammonia and helped protect baby shrimp, despite the store not even carrying freshwater livestock. That kind of service is hard to find. Beyond the retail side, Fins Up offers professional tank maintenance and setup services.
Ryan and his team have transported and set up tanks as large as 150 gallons with zero livestock losses, and they'll look after your system while you're out of town. The shop also carries dry goods and equipment to keep your reef running smoothly. For reef keepers along the Front Range, Fins Up Reef Co.
has quickly become the local fish store that earns loyalty through fair pricing, pristine facilities, and the kind of genuine expertise that makes you want to start another tank. Just call ahead to confirm hours before making the drive.
Thomas 0619 (Tee-lo)
125 reviews
Google says the store is open. I just left. The store is closed at 2:30pm on Sunday. Second time I have drove here and the store is closed. Don't waste your time gambling if this place is open. Go somewhere else
MICHELLE ARANTES
2 reviews
Awesome clean store with a great selection of corals and fish. Ryan is extremely passionate about the hobby and was super informative and explained all my questions
Daniel Marquez
Ryan is such a great help. Amazing quality and professional service!
Karla Marquez
3 reviews
Had the best experience, really helpful getting my started with my first saltwater tank!
Alexandra Chavez
5 reviews
Fins Up is my go to place for anything salt water! The fish are amazing quality and always fairly priced. I go no where else for my aquariums. Fins up also has beautiful corals and there is always variety. This is one of my favorite reef stores in Colorado.
Vincenzo Perri
12 reviews
Fins Up is hands down the best saltwater aquarium store and service team I've ever worked with. Their prices are more than fair often better than what you'll find online and they back it up with an incredible depth of knowledge about saltwater systems, corals, and fish care. What really stands out is their customer service. The staff takes the time to explain everything, from equipment recommendations to proper tank maintenance, so you feel confident and supported. Their tank service is top-notch as well professional, reliable, and it always leaves my setup looking healthier and running smoother than before. Whether you're a beginner starting your first reef tank or an experienced aquarist looking for quality livestock and expert help, Fins Up is the place to go. I wouldn't trust my tank with anyone else.
Jenn S
19 reviews
I had a fish emergency and after going to multiple aquarium supply stores including privately owned and big box, out of desperation, I called Fins Up Reef Co and they said to come on in. I ONLY have freshwater tanks, but they still went out of their way to help me keep my baby fish and baby shrimp safe until I can have the right equipment delivered. They also tested my water sample for ammonia, again, knowing I don't have a salt water tank. The only issue I have with them is after seeing their gorgeous selection of fish and corals, I am even more obsessed with the idea of joining the saltwater tank world. So... maybe my husband won't rate them quite as high... 😉 But after hearing about my experience, he agrees, Fins Up will be our store of choice when we finally decide to dive in to the saltwater world. Incomparable customer service! Baby shrimp are hard to get pictures of, but momma is happy!
Daniel Kaupp
9 reviews
Ryan and his staff are the best. His passion and knowledge is over the top. Thank you for help us get our tank set up and we will be back. He has an amazing selection and everything looks healthy.
Jacob Ingersoll
22 reviews
Great selection of fish. High quality corals. Very clean facility, highly recommend.
Nicole York
22 reviews
Wow amazing store, and great prices!! This is the best store in Denver, we went to pretty much all aquatic stores around Denver and yes this one is beating all of them. I do recommend always making a call and asking the store if they have what you looking for before you go. Coral selection is also 100%!!! This is our spot from now on!!!
Note: Store information and services may change. Always call (305) 903-1122 to confirm current availability, hours, and services before visiting Fins Up Reef Co..
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3625 W Bowles Ave Unit 18, Littleton, CO 80123
February 7, 2026
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