About
Fluid Dynamics Aquarium Services and Store has become the aquarium store Long Island hobbyists measure all others against, and a visit to its Deer Park, NY showroom makes the reason obvious: spotless tanks, genuinely healthy livestock, and a counter staffed by people who would rather teach than upsell. Owner Jared, alongside familiar faces like Brian, Tyler, John, Cory, and Johnathan, runs the place more like a working aquarist's studio than a pet shop, and reviewers keep coming back for it. The freshwater room is the draw for many.
Regulars return for interesting nano fish, beautiful African cichlids you genuinely won't find elsewhere on Long Island, large Frontosas priced under $100, Bolivian rams, bristlenose plecos, and healthy shrimp, all available in Deer Park, NY. On a recent visit one shopper hunting discus learned a batch is coming in for the summer; in the meantime an employee named John walked him through a tank of apistos, explaining how to tell males from females and which ones not to house together. That kind of unhurried, hands-on advice shows up in review after review.
The saltwater side is just as serious. You'll find reef-ready livestock and fairly priced clownfish for sale, and the team's service arm has rescued reef systems other companies couldn't get right, while keeping a thriving 800-gallon saltwater tank running. Planted-tank keepers linger over the beautifully scaped display tanks and the fully submerged, healthy plants that experienced aquarists immediately notice.
Beyond retail, Fluid Dynamics designs and fabricates custom aquariums and handles ongoing maintenance for homes and businesses across Long Island. One customer recently had a built-to-spec tank installed that came out better than he'd imagined, then kept the team on for regular, on-time service. Walk in with a question and you'll likely leave with what feels like a free masterclass, which is exactly why people describe this as what a real local fish store should be.
What they offer
Fish & livestock for sale at Fluid Dynamics Aquarium Services and Store in Deer Park, NY
Fluid Dynamics Aquarium Services and Store stocks African cichlids, cichlids, corals, reef fish, rare and hard-to-find species, plecos, shrimp, invertebrates, aquarium plants and freshwater & saltwater fish for sale in Deer Park, NY. As an aquarium store serving Deer Park, NY, it also carries aquarium equipment and offers tank maintenance, custom tank builds, aquarium consultations, aquarium setup, aquascaping and tank cleaning.
- Livestock & products
- African CichlidsCichlidsLive PlantsPlanted TanksCoralsReefRare SpeciesPlecosShrimpInvertebratesClownfishAquarium Equipment
- Services
- Specializes in
Highlights
What makes them special
- Beautiful African cichlids found nowhere else on Long Island, plus large Frontosas priced under $100
- Interesting freshwater nano fish, Bolivian rams, bristlenose plecos, and healthy shrimp
- Saltwater and reef livestock, plus a service team that maintains a thriving 800-gallon saltwater tank
- Custom aquarium design, fabrication, and ongoing maintenance for homes and businesses on Long Island
- Patient, knowledgeable staff (Jared, Brian, John, Johnathan, and team) known for teaching, not upselling
From keepers
Customer reviews
“Very attentive to when you walk in and any type of question …. They will have an answer for you !”
— Keith Rotzi5.02 months ago“Amazing place amazing atmosphere come check them out”
— Pegasus Productions5.02 months ago“Awesome prices services and variety.”
— Branden Breaks5.02 months ago“Clean and professional local fish store with friendly and knowledgeable staff”
— Danyal Shaikh5.02 months ago“I had such a great experience working with this team for my aquarium setup. I’m on Long Island and was looking for someone who really knew what they were doing with custom aquariums, and they totally delivered. They helped design and build exactly what I had in mind, and it honestly came out even better than I expected. The tank looks amazing and really changed the whole vibe of the room. You can tell they care about the details and actually know their stuff when it comes to fish and maintenance. I also use them for regular aquarium service now, and they’re always on time and super easy to work with. If you’re on Long Island and thinking about a custom aquarium or need reliable aquarium maintenance, I’d definitely recommend them.”
— Jeff Balcourt5.02 months ago“Had a great experience at Fluid Dynamics Aquarium Services and Store in Deer Park. The owner Jared and Johnathan are truly amazing—kind, professional, and genuinely caring. Their positive attitude and good-hearted approach make this place stand out. Johnathan is an outstanding employee—kind, respectful, and genuinely caring. As someone who knows him personally through my daughter Aaliya and my son Alif, it was great to see his professionalism in action. Highly recommend!”
— Mohammed Jakir5.02 months ago“I walked in not knowing what to expect. Was it an aquarium service store or did they sell fish? It turns out they do both. They had a very nice assortment of salt and fresh water fish. I was looking for discus and the employee who was also named John was very helpful. He said they would be getting discus in the summer. He pointed out some apistos that were very nice. He explained to me how to tell the male from the female and also not to put two males together. I strongly recommend anyone interested in fish to check this place out.”
— John Buscetta5.03 months ago“Amazing help with some new great fish. Will be back soon!”
— charles schembri5.04 months ago“I haven’t been there in quite a while and it very refreshing. They remembered me and the store is gorgeous. Spotless, and it is growing. Filled with the most amazing fish!! How lucky 🍀 we are to have a real local Fish store like this …. It’s got great stock; great advice … open till 7 on Saturday… this is a Winning 🥇 place and I am glad to be able to come here. Btw the prices are insane … good! Huge Frontosas for less than $100 ! Love this place”
— teamsalamone5.06 days ago“A lot of unique and beautiful African cichlids that are not found anywhere else on Long Island would definitely recommend checking them out”
— Chris5.04 weeks ago
Reference
Frequently asked questions
Note — Store information and services may change. Always call (631) 208-5302 to confirm current availability, hours, and services before visiting Fluid Dynamics Aquarium Services and Store.