

Shop freshwater & saltwater fish online or in-store, plus expert aquarium maintenance services in Jacksonville, FL.
Freshwater & Saltwater Fish, Plus Expert Aquarium Maintenance
Jacksonville,FL Aquarium Store
Natural Environment Aquatix proudly serves Jacksonville with two full-service aquarium store locations — one on Dunn Avenue in North Jax and one in the heart of Mandarin. Whether you're into freshwater, saltwater, or planted tanks, we've got everything you need.

Aquarium Store on Dunn Avenue | NE Jacksonville’s Aquatic Experts
Visit Natural Environment Aquatix on Dunn Avenue for one of Jacksonville’s most complete selections of freshwater fish, premium tanks, live plants, and aquarium supplies. Conveniently located in North Jacksonville, our Dunn Ave location is the go-to destination for aquarists of all experience levels. From colorful discus to planted aquascapes, we offer expert advice and livestock you won’t find anywhere else.📍 Address: 3000 Dunn Ave, Jacksonville, FL 32218📞 Phone: (904) 497-7733


Aquarium Store in Mandarin | South Jacksonville Fish & Tank Specialists
Our Mandarin location brings the trusted Natural Environment Aquatix experience to South Jacksonville with a strong focus on both saltwater and freshwater aquariums. Browse a handpicked selection of community fish, coral, inverts, cleanup crews, and aquascaping essentials. Whether you’re starting your first nano reef or upgrading your display tank, our Mandarin team is here to help. We also offer full-service aquarium maintenance, custom tank setups, and expert support.Located just minutes from Julington Creek, St. Johns, and Fruit Cove — this is your neighborhood hub for saltwater hobbyists, reef builders, and planted tank lovers alike.📍 Address: 11018 Old St. Augustine Rd, Jacksonville, FL 32257 📞 Phone: (904) 982-7662
Natural Environment Aquatix
Jacksonville’s trusted aquarium store for freshwater and saltwater fish, custom tanks, aquatic plants, and expert aquarium maintenance. Shop online or in-store for quality livestock and supplies, backed by knowledgeable local service.

Shop healthy freshwater fish online or in-store
Freshwater
Discover a diverse selection of healthy freshwater fish and vibrant live aquatic plants available both online and in-store at Natural Environment Aquatix in Jacksonville, FL. Whether you're building a peaceful community tank or a lush planted aquarium, our quality fish and carefully cultivated plants are perfect for creating a balanced and thriving aquatic environment. Shop local or enjoy the convenience of online ordering with fast shipping and expert advice from Jacksonville’s trusted aquarium store.

Shop healthy saltwater fish in Jacksonville,FL
Saltwater Fish
Explore our stunning collection of saltwater fish, available exclusively in-store at Natural Environment Aquatix in Jacksonville, FL. From reef-safe favorites to bold showpiece species, our marine fish are healthy, vibrant, and ready for your saltwater aquarium. Whether you're starting a nano reef or stocking a large marine setup, our knowledgeable staff is here to help you choose the perfect additions. Visit us in-store to see our ever-changing selection of saltwater fish for sale in Jacksonville— new arrivals hit our tanks every week!

Keep your tank healthy with expert aquarium maintenance in Jacksonville,FL
Aquarium Maintenance
Natural Environment Aquatix offers professional aquarium cleaning services for both freshwater and saltwater tanks throughout the greater Jacksonville area. Our expert team provides water changes, equipment checks, algae removal, and full tank cleanings tailored to your setup. We proudly serve homes and businesses within a 60-mile radius of Mandarin, including Jacksonville, Orange Park, Fleming Island, St. Johns, Middleburg, Green Cove Springs, Nocatee, Ponte Vedra, Jacksonville Beach, Atlantic Beach, Yulee, Callahan, Macclenny, Baldwin, St. Augustine, and surrounding areas. Whether you need routine service or custom care, trust NEA to keep your aquarium clean, healthy, and thriving.

Quality fish tanks for sale in Jacksonville, FL
Aquariums For Sale
At Natural Environment Aquatix in Jacksonville, FL, we carry a wide selection of aquariums for sale in-store only, perfect for freshwater or saltwater setups. From sleek rimless aquascaping tanks by UNS (Ultum Nature Systems)to high-quality glass aquariums from Planet Aquariumsand complete reef-ready systems from ProClear Aquatic Systems, we have tanks for every hobbyist and every space. Our in-store inventory includes popular sizes like 10, 20, 55, up to 200-gallon tanks, as well as custom and large-format aquariums. Visit us in-store to see what's available and get expert guidance from Jacksonville’s trusted local aquarium shop.
Aquarium Fish For Sale Online
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Freshwater Aquarium Fish
Explore our wide selection of freshwater fish for sale online and in-store...
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Saltwater Aquarium Fish
Browse our vibrant selection of saltwater fish for sale online and in-store...
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Mandarin New Arrivals
Discover an exciting variety of freshwater and saltwater fish at Natural Environment...
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Dunn New Arrivals
At Natural Environment Aquatix in Jacksonville, FL, we offer a diverse and...
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Live Aquatic Plants
Enhance your aquarium with our beautiful selection of aquatic plants for sale,...
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House Plants
Bring the beauty of nature indoors with our carefully selected houseplants at...
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Fish Tank Supplies
Find everything you need to keep your aquarium running smoothly with our...
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Aquariums & Stands
Looking to upgrade your setup? Visit Natural Environment Aquatix in Jacksonville, FL...
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Shippable Aquariums
Shopping from home? Browse our curated collection of aquariums for sale online...
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Coming Soon
Get ready for something new in your tank! At Natural Environment Aquatix...
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Gift Cards
Perfect for the aquatic lover in your life! Our e-gift cards offer...
New Arrivals Weekly
Discover a vibrant selection of both freshwater fish for sale in Jacksonville, FL andsaltwater fish near me at Natural Environment Aquatix! Whether you’re building a peaceful community freshwater tank or an intricate saltwater reef aquarium, we offer healthy, colorful fish perfect for every setup. From hardy beginner-friendly freshwater fish to exotic marine fish species, our inventory is carefully curated for quality and vitality. Plus, with new fish arrivals weekly and convenient online sales alongside in-store pickup, you can shop fresh, live fish wherever you are. Trust Jacksonville’s favorite local fish store for top-quality livestock and expert advice to bring your aquatic vision to life!
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Assorted Male Guppies
Regular price $6.99Regular priceUnit price / per -
Assorted Mollies
Regular price $6.99Regular priceUnit price / per -
Dwarf Shrimp
Regular price $9.99Regular priceUnit price / per -
Neon Tetra
Regular price $4.99Regular priceUnit price / per -
Assorted Female Guppies
Regular price $6.99Regular priceUnit price / per -
Assorted Platy
Regular price $5.99Regular priceUnit price / per -
Assorted Swordtail
Regular price $6.99Regular priceUnit price / per -
Kuhli Loach
Regular price $7.99Regular priceUnit price / per
Shipping Freshwater Fish
Blog posts
View all-
Top 5 Freshwater Favorites at Our Mandarin Loca...
At Natural Environment Aquatix in Mandarin, Jacksonville, our customers know quality when they see it and our top-selling fish and invertebrates prove it. Whether you’re building out a peaceful community tank...
Top 5 Freshwater Favorites at Our Mandarin Loca...
At Natural Environment Aquatix in Mandarin, Jacksonville, our customers know quality when they see it and our top-selling fish and invertebrates prove it. Whether you’re building out a peaceful community tank...
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Why Local Matters: Get Healthy, Thriving Saltwa...
At Natural Environment Aquatix, we go the extra mile to ensure every saltwater fish we sell is healthy, quarantined, and eating well. Visit our Jacksonville store to browse in person,...
Why Local Matters: Get Healthy, Thriving Saltwa...
At Natural Environment Aquatix, we go the extra mile to ensure every saltwater fish we sell is healthy, quarantined, and eating well. Visit our Jacksonville store to browse in person,...
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Stress-Free Aquarium Maintenance in Jacksonvill...
Keep Your Aquarium Thriving with NEA Maintenance Services in Jacksonville, FLNatural Environment Aquatix offers professional freshwater aquarium maintenance, saltwater aquarium maintenance, and planted tank maintenance across Jacksonville and surrounding areas....
Stress-Free Aquarium Maintenance in Jacksonvill...
Keep Your Aquarium Thriving with NEA Maintenance Services in Jacksonville, FLNatural Environment Aquatix offers professional freshwater aquarium maintenance, saltwater aquarium maintenance, and planted tank maintenance across Jacksonville and surrounding areas....