Retail Pet Store • Free Entry • Open to Public

Tropical Lagoon Aquarium:
Silver Spring's Premier Fish Store

Stop Guessing. Start Thriving.

Tired of losing fish to "big box" store advice? At Tropical Lagoon, we combine 40 years of expertise with healthy, quarantined livestock to help you build the aquarium of your dreams.

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The Lagoon Difference

We Don't Just Sell Fish.
We Build Ecosystems.

Many hobbyists struggle because they are sold the wrong equipment or incompatible fish. We change that. Tropical Lagoon Aquarium is Silver Spring's oldest and most trusted aquatic specialist for a reason: we care about your success.

  • Quarantined Livestock: We observe our fish to ensure they are eating and healthy before they enter your tank.
  • Honest Advice: We will tell you "no" if a fish isn't right for your setup. We value long-term customers over quick sales.
  • Community Focused: We are hobbyists helping hobbyists. Beginners and experts are equally welcome.
Healthy Aquarium Tank in Silver Spring

Fresh Shipments Arrive Every Wednesday & Friday

Our stock moves fast! We receive new freshwater fish, marine livestock, and aquatic plants twice a week. Visit us Thursday or Saturday for the widest selection of healthy, acclimated specimens.

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Curated Selection

Explore Our Departments

We stock hundreds of species. Whether you are looking for a nano-tank centerpiece or a predator for your 120-gallon, we have it.

Freshwater Fish

Freshwater Fish

From colorful Tetras and Guppies for beginners to rare Cichlids and Discus for the pros. We also carry a massive selection of live aquatic plants to create natural aquascapes.

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Saltwater Fish

Saltwater & Reef

Vibrant Tangs, Clownfish, Angels, and Wrasses. We specialize in reef-safe livestock and carry a variety of LPS, SPS, and Soft Coral frags that are pest-free and growing.

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Aquarium Supplies

Equipment & Food

Don't buy cheap gear twice. We stock reliable heaters, filters, and lights. Plus, we carry live foods (Blackworms, Brine Shrimp) to trigger feeding responses in picky eaters.

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Water Testing

More Than Just A Store

We offer services to ensure your tank stays beautiful year-round.

Free Water Testing

Struggling with algae or dying fish? Bring us a water sample. We analyze pH, Ammonia, Nitrites, and Nitrates for free and advise on corrections.

Tank Maintenance

Too busy to clean? We offer professional cleaning and maintenance services for homes and businesses in the Silver Spring area.

Custom Setups

From nano-cubes to 200+ gallon custom installs, we can help you design the plumbing, lighting, and hardscape.

Expert Education

We take the time to teach you the nitrogen cycle, compatibility, and care requirements. An educated hobbyist is a successful one.

Trusted by Silver Spring Locals

"Cozy place with a knowledgeable, friendly staff. I only went for a few hermit crab supplies but you could tell they take great care of their fish! Will go back."

- Laura C.

"Great spot, they really know their stuff. Super helpful. If you have any questions, you'll find an answer! All their fish, fresh and salt, look healthy and happy."

- Paul M.

"Not many aquarium specialty shops can say they have been in business for 4 or more decades and have survived the influx of the super mega stores. If you are a true hobbyist, check them out."

- Chris E.