Shawn is incredibly knowledgeable and friendly. He was patient as we chose our fish and he gave…read moregreat advice. You can tell he knows what he's doing just based on his tanks. I would highly recommend using him over a fish store for your angels or your discus. He also has bristle nosed plecos. You can tell he does this because he just loves fish.

John has maintained my fish tank for many years. He is knowledgeable, honest and dependable…read more 3037506935 call him.

From the owner: All Seas Aquarium Service is a sales and service company based in Denver, Colorado. We provide…read moreinstallation and service for living reef, freshwater, and saltwater aquariums in your home or business. Our average customer has been with us for five years and several for more than twenty-five years. We look forward to adding you to our list of loyal and satisfied clients. Call us today for more information!

Julie, is awesome. Very knowledgeable, great selection of fish and supplies…read more Julie has a great selection of Chiclids

I really love this store. The fish are healthy, & the lady running the shop has a wealth of…read moreinformation that she freely gives as she shows you her fish. You can tell she loves the fish and wants them to do well with whoever they go home with. I was mostly focused on getting some fancy goldfish. Orandas, Ranchu, Ryukins, some of the more extreme body shapes. She had plenty and I purchased 4. It's been 2 months of beautiful & happy fish. I worked in the aquarium & fish business 30 years back for most of my 20's. I had always wanted a shop of my own. But the overhead cost of caring for, feeding and housing before you ever sell a fish make this a difficult business to survive in. But, its the only way to assure your selling healthy fish. So, when I find a shop like this, I support that shop, and I spend my money there. So, the shops like this, that sell the happy healthy fish, and give you the info needed to keep them that way, are able to continue to do so for years.

Fins Up is hands down the best saltwater aquarium store and service team I've ever worked with…read more 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.

Ryan and his family just opened up this gem of a reef and fish store and I speak highly enough of…read moreit. They carry most of the brands us hobbyists know and love, as well as brands that are comparable in quality, but lesser known and lower priced. The prices on coral and livestock are really good. So much so, that I drive from north Thornton, passing at least 5 closer fish stores, to their store to get what I need. Ryan runs an amazing service program as well and he helped me turn my tank around in 2 months when I thought it would take at least a year. I'm telling everyone I know about their store because the service, products and attention to detail are second to none!

Great selection of south and African cichlids along with all the usual varieties found in every pet…read moreshop.

​ THE AQUARIUM UTOPIA: About Fish Is the Legend Made Real!…read more ​Hold the siphon--I'm logging off the forums just long enough to write this. About Fish isn't merely a local fish store; it is the absolute holy grail of the aquatic hobby. Walking in is less like entering a retail space and more like stepping into a private, meticulously curated gallery. Whether you're nursing a single Betta or masterminding a massive, professional-grade system, your search for excellence ends right here. ​This store doesn't just meet the gold standard; it invented it. ​ The Staff: Certified Aquatic Gurus, Not Just Employees ​The people at About Fish are nothing short of aquatic philosophers. Their passion isn't just deep--it's Mariana Trench deep. On my most recent, panicked visit, I cornered a staff member (shout-out to Asher, the Water Chemistry Guru) to discuss my devastating bout with Hexamita (Hole-in-the-Head disease) in my Discus tank. ​Instead of a vague anecdote, I received a detailed, clinical-grade protocol--complete with a timeline, specific chemical ratios, and best practices for surgical isolation. Their collective expertise spans the entire aquatic spectrum, from the finest nuances of Amazon biotope setups to the dark arts of tuning highly complex \text{CO}_2 injection systems. This level of professional, hands-on dedication is simply priceless. ​ The Livestock: Surgical-Suite Clean and Mythically Healthy! ​If I could award a sixth star for livestock health alone, I absolutely would. The display tanks at About Fish are hospital-grade clean--you could practically perform surgery on the substrate. There are no signs of ich, no clamped fins, and absolutely zero evidence of the stress and disease commonly found elsewhere. Their stringent quarantine process results in livestock that transitions into home tanks with a near-flawless success rate. ​Aquatic Jewels & Plant Nirvana: They stock specimens I thought only existed in online wishlists: Mythical Red Arowanas, intensely colored F1 Wild-Caught Discus that look like living canvases, and L-Series Plecos that truly defy belief. ​The planted section is a hydroponic metropolis, lush, diverse, and miraculously, completely free of pest snails or algae blooms. Their selection includes everything from rare carpeting plants and massive Anubias specimens to difficult-to-culture Eriocaulon species. ​ The Inventory: A Secret Weapon Cache for the Dedicated Hobbyist ​About Fish doesn't stock junk. Their dry goods area is a perfectly curated arsenal of the industry's elite equipment. They consistently carry the niche, high-performance gear you usually have to wait weeks for online: the latest pumps, titanium heaters, professional-grade testing consumables, and hard-to-find supplements. They are experts at matching the right tool to your tank's exact needs, and their pricing is unbeatably fair, providing incredible value for such premium quality. ​Final Verdict: Your Aquatic Manifest Destiny! ​About Fish transcends the concept of a store. It's an immersion center, a learning lab, and a genuine anchor for the fish-keeping community. If your aquatic journey demands the healthiest livestock, expert, surgical advice, and equipment built to last a decade, look no further. ​This isn't just a five-star store that Marc Sherman has created; it's the hobbyist's manifest destiny! Go now!

I can't say enough good things about this fish store and the incredible people who work there. When…read moremy tank unexpectedly sprang a leak, I was completely overwhelmed and stressed. It felt like everything was happening at once -- and I truly needed guidance, reassurance, and kindness in that moment. Love was absolutely amazing. Not only knowledgeable, but genuinely compassionate and patient. I never once felt rushed or dismissed -- just supported. Rumi also went above and beyond, answering my emails almost instantly and making sure I had the information I needed right away. That level of responsiveness made all the difference during a stressful situation. What could have been a total disaster turned into a reminder that there are still businesses that truly care about their customers. Their kindness, expertise, and willingness to help meant more to me than I can express. If you're looking for a fish store that treats you like family and stands by you when things go wrong, this is the place. I'm incredibly grateful. They've also given me piece of mind for my future vacations

Zero if I could. What an awful experience. The CO owner lied to me, she told me she could work with…read moreme on a dead fish, I should've known that it was too good to be true. Having driven 45 minutes to the store with my water sample, which I tested against test strips, don't buy those, I was told the phosphates were too high. They don't include phosphates as a red flag unless they're going to deny you. My nitrate was too high? Nitrate is a normal part of a tank cycle. I've never qualified buying new fish based on having to do a tank change the day before purchase. And phosphate! Serious? Do you even sell that test kit? I've never seen it before. After spending $500 in one week you could do me the courtesy of saying "bring a water sample, it doesn't matter we're not giving you a thing." Notes: they are super friendly and helpful when you're buying something. Just don't expect much. They had a dead fish in one of the tanks that my son pointed out that had been there for at least a day. At least that's what the pleco was thinking. Now, find the tank. They have a 48 hour doa policy. They won't budge, trust me. Ask my seven year old who spent $35 on a butterfly pleco only to have it die within a week. $17.50 would have been enough for me, more than fair I said. Finally, even if you live in Elizabeth or Parker, and you are five minutes away from the store, drive the extra 45 minutes to Wheat Ridge and go to The Fish Den. Tell Michael Jason sent you. They have a better rating than MC Aquatics. Here are my readings according to an API freshwater master test kit ($40 at petsmart) Ph 7.4 High range pH 7.8 Ammonia 0 ppm Nitrate 0 ppm Nitrite 0 ppm See the pic below. Finally Phosphates: that's a joke. Good luck knowing that. You're welcome. Next time you tell someone nitrate is a 39, make sure that you tell them what the safe range is. And to think, you guys normally charge $6.00 for a water check. Buy your own test kit and save yourself the headache. Date of incident, June 17, 2025 Water sample from the same day.

So friendly and I love shopping local! Fish tanks are clean, animals and birds appear well cared…read morefor. If I were a pet in a pet store - I would pick pet world.

I love this store. The staff are just wonderful. The prices are good. I have 3 tanks and they are…read morealways willing to help me. It is so much better than a chain store!!

Great store. Amazing staff and owner. Quality corals, inverts and fish. I love this placeread more

Cute and Vast selection of dog jackets. Great Service. But only street parking available.read more

What a cute little store! I went in for a birthday cake for my dog. They have a glass case full of…read morefreshly baked homemade dog-friendly treats. They were all SO cute! I had a really hard time choosing one for my pup. I went with the cake - because it was adorable. The employee working was so sweet and helped me navigate which was best for my pup! They also have super cute birthday toys and party hats! Unfortunately, I cannot rate the cake, however, Dozer can..... Design of cake: 4 paws out of 4 paws Taste: 8 paws out of 4 paws! Dozer says thanks to Two pals & a pup for the wonderful cake! It made his birthday so special! He hopes we return very soon!

Perfect place. Owner was super nice. Solid set up for dog wash with all the things just right…read more Keep it up boys!

Owners are very kind & knowledgeable about their products! Love coming in here, self dog wash is…read moresuper popular too!