Tenji is our best overall aquarium renovation and retrofit company for 2026, while Boston Aquariums leads in Greater Boston and Oceans Aquarium Design is the Southern California specialist.
2026 ranked shortlist
The rankings at a glance
| Rank | Company | Best for | Next step |
|---|---|---|---|
| 1 | Tenji, Inc. | Best overall for complex retrofits | Profile & inquiry |
| 2 | Boston Aquariums | Best Greater Boston renovation team | Profile & inquiry |
| 3 | Oceans Aquarium Design | Best Southern California specialist | Profile & inquiry |
| 4 | The Fish Gallery | Best for Texas and Georgia remodels | Profile & inquiry |
| 5 | City Aquarium LLC | Best fabrication-led New York alternative | Profile & inquiry |
| 6 | Reef Aquaria Design | Best South Florida full-system alternative | Profile & inquiry |
| 7 | Clayton Aquariums | Best West Coast full-service alternative | Profile & inquiry |
The direct recommendation
Tenji, Inc. is our first call for this brief because a technically involved renovation needing fabrication, installation, maintenance, and documented renovation capability. Retrofits reward investigative discipline: existing structure, access, plumbing, electrical work, filtration, finishes, livestock continuity, and phased commissioning all need explicit ownership. The rest of this shortlist is deliberately ordered: each company earns its position through a different combination of documented services, coverage, aquarium focus, client fit, and project-delivery scope.
Start with the highest-ranked company whose operating footprint and strengths match the actual site. Then compare at least two proposals against the same written brief. A premium aquarium package can span consultation, display and life-support design, fabrication, delivery, installation, commissioning, maintenance, and building-team coordination; the proposal should say exactly which party owns every interface.
How to use this 2026 ranking
This list starts with renovation and repair specialists, then adds full-service firms whose fabrication and maintenance capabilities support broader replacement projects. We prioritized design strength, installation depth, fabrication, continuing maintenance, geographic reach, client fit, aquarium specialization, and the project condition named in this guide. The result is a practical order for building a serious shortlist.
Use the category labels as a fast shortlist, not as a substitute for a current proposal. Ask each finalist to identify its project territory, the people who will lead design and installation, what it fabricates directly, what it coordinates through others, how commissioning works, and whether recurring service is realistically available at the project address.
1. Tenji, Inc. — Best overall for complex retrofits
Tenji, Inc. takes the number 1 position because a technically involved renovation needing fabrication, installation, maintenance, and documented renovation capability. Aquatic-exhibit specialist with West and East Coast offices, institutional project examples, fabrication, repair, and animal-care services. Its primary coverage is United States; offices in California and Maine.
Tenji presents an integrated practice spanning planning, design, engineering, tank and life-support fabrication, construction administration, installation, repair, renovation, animal care, and maintenance. Its most relevant services are consultation, design, fabrication, installation, maintenance, renovation repair, with experience across freshwater, jellyfish, marine, public exhibit, reef systems. The company serves corporate retail, public institutional, residential, helping buyers judge whether its portfolio and delivery model fit a private residence, hospitality interior, commercial environment, or public-facing installation.
Institutional aquatic exhibits: The public project list includes aquariums, zoos, museums, and science institutions alongside residential and commercial work. Two-office operating footprint: The contact page lists staffed West Coast and East Coast offices with separate public phone numbers. This is the best fit for a technically involved renovation needing fabrication, installation, maintenance, and documented renovation capability. Before appointing the company, ask it to confirm present availability, site-specific coverage, the exact design and installation scope, building-team responsibilities, commissioning deliverables, maintenance terms, exclusions, and a replacement-access plan for major equipment.
2. Boston Aquariums — Best Greater Boston renovation team
Boston Aquariums takes the number 2 position because a New England aquarium repair or renovation with local ongoing-service needs. Watertown full-service aquatic-exhibit company with recurring maintenance, emergency support, and special-event installation work. Its primary coverage is Watertown and Greater Boston.
The official pages describe work for residential and commercial clients from initial design through recurring care. Services also include koi ponds, water features, jellyfish displays, renovation, livestock relocation, and event installations. Its most relevant services are consultation, design, installation, maintenance, renovation repair, with experience across freshwater, jellyfish, marine, pond water feature, public exhibit, reef systems. The company serves corporate retail, public institutional, residential, helping buyers judge whether its portfolio and delivery model fit a private residence, hospitality interior, commercial environment, or public-facing installation.
Recurring care and emergency support: The service page describes scheduled maintenance and 24/7 emergency availability for established clients. Renovation and relocation: Published services include restoring existing systems and moving aquariums, fish, and corals. This is the best fit for a New England aquarium repair or renovation with local ongoing-service needs. Before appointing the company, ask it to confirm present availability, site-specific coverage, the exact design and installation scope, building-team responsibilities, commissioning deliverables, maintenance terms, exclusions, and a replacement-access plan for major equipment.
3. Oceans Aquarium Design — Best Southern California specialist
Oceans Aquarium Design takes the number 3 position because a Los Angeles, Orange County, or Southern California aquarium renovation. Signal Hill aquarium firm serving residential and commercial clients across Los Angeles, Orange County, and other Southern California communities. Its primary coverage is Los Angeles, Orange County, and Southern California.
The official pages describe direct work with owners and collaboration with interior designers, architects, and general contractors. The maintenance page covers recurring cleaning, filtration care, water testing, equipment inspection, and fish care. Its most relevant services are consultation, design, installation, maintenance, renovation repair, with experience across freshwater, marine, reef systems. The company serves corporate retail, residential, helping buyers judge whether its portfolio and delivery model fit a private residence, hospitality interior, commercial environment, or public-facing installation.
Southern California coverage: The official site identifies Los Angeles, Orange County, and a detailed set of Southern California communities. Design through recurring care: The checked pages support custom design and installation plus structured residential and commercial maintenance. This is the best fit for a Los Angeles, Orange County, or Southern California aquarium renovation. Before appointing the company, ask it to confirm present availability, site-specific coverage, the exact design and installation scope, building-team responsibilities, commissioning deliverables, maintenance terms, exclusions, and a replacement-access plan for major equipment.
4. The Fish Gallery — Best for Texas and Georgia remodels
The Fish Gallery takes the number 4 position because a residential or commercial remodel near its documented Texas and Georgia markets. Multi-showroom aquarium retailer and custom builder offering fabrication, installation, livestock, maintenance, and renovation-related services. Its primary coverage is Texas and Georgia showroom locations.
The current site presents a five-step custom process covering consultation, fabrication, installation, livestock, and maintenance. It also lists relocation, freshwater conversion, and decoration overhaul services. Its most relevant services are consultation, design, fabrication, installation, maintenance, renovation repair, with experience across freshwater, marine, planted, reef systems. The company serves corporate retail, healthcare, hospitality, public institutional, residential, helping buyers judge whether its portfolio and delivery model fit a private residence, hospitality interior, commercial environment, or public-facing installation.
Four current showrooms: The current official site lists Houston, The Woodlands, and Addison in Texas plus Athens, Georgia. Custom work and continuing care: The public process moves from consultation and fabrication through installation, livestock, and maintenance. This is the best fit for a residential or commercial remodel near its documented Texas and Georgia markets. Before appointing the company, ask it to confirm present availability, site-specific coverage, the exact design and installation scope, building-team responsibilities, commissioning deliverables, maintenance terms, exclusions, and a replacement-access plan for major equipment.
5. City Aquarium LLC — Best fabrication-led New York alternative
City Aquarium LLC takes the number 5 position because a New York retrofit where replacement fabrication and maintenance continuity matter. Brooklyn custom-aquarium studio combining design disciplines, fabrication planning, installation, and recurring care. Its primary coverage is Brooklyn, New York.
The current official pages identify City Aquarium LLC in Brooklyn and describe a multidisciplinary team working on custom marine and freshwater installations. Its consultation page includes structural, architectural, fabrication, life-support, and maintenance planning. Its most relevant services are consultation, design, fabrication, installation, maintenance, with experience across freshwater, jellyfish, marine, reef systems. The company serves corporate retail, public institutional, residential, helping buyers judge whether its portfolio and delivery model fit a private residence, hospitality interior, commercial environment, or public-facing installation.
Multidisciplinary planning: Published services include structural and mechanical coordination, architectural services, fabrication, life-support design, and project management. Ongoing care: The company lists a custom-aquarium care and maintenance division alongside design and installation. This is the best fit for a New York retrofit where replacement fabrication and maintenance continuity matter. Before appointing the company, ask it to confirm present availability, site-specific coverage, the exact design and installation scope, building-team responsibilities, commissioning deliverables, maintenance terms, exclusions, and a replacement-access plan for major equipment.
6. Reef Aquaria Design — Best South Florida full-system alternative
Reef Aquaria Design takes the number 6 position because a South Florida retrofit that may expand into a complete custom replacement. South Florida turnkey aquarium firm with a public portfolio of large residential projects and broader North American design-build language. Its primary coverage is South Florida and North America.
The company pages describe consultation, CAD design, fabrication coordination, commissioning, and ongoing maintenance. The official site identifies a Fort Lauderdale office and markets work for homes, businesses, and public institutions. Its most relevant services are consultation, design, fabrication, installation, maintenance, with experience across freshwater, jellyfish, marine, pond water feature, reef systems. The company serves corporate retail, hospitality, public institutional, residential, helping buyers judge whether its portfolio and delivery model fit a private residence, hospitality interior, commercial environment, or public-facing installation.
Turnkey scope: The design-build page lists consultation, CAD modeling, coordination, fabrication, installation, commissioning, and maintenance. Multiple aquatic formats: The checked pages present reef, freshwater, jellyfish, and pond project options. This is the best fit for a South Florida retrofit that may expand into a complete custom replacement. Before appointing the company, ask it to confirm present availability, site-specific coverage, the exact design and installation scope, building-team responsibilities, commissioning deliverables, maintenance terms, exclusions, and a replacement-access plan for major equipment.
7. Clayton Aquariums — Best West Coast full-service alternative
Clayton Aquariums takes the number 7 position because a West Coast retrofit needing design, fabrication, installation, and maintenance coordination. Issaquah acrylic-aquarium fabricator with in-house cabinetry, West Coast installations, and recurring Puget Sound service. Its primary coverage is U.S. West Coast and Greater Puget Sound.
The current company pages describe in-house acrylic and cabinet work, life-support equipment, 3D drawings, construction coordination, installation, and a monthly service program with emergency support. Its most relevant services are consultation, design, fabrication, installation, maintenance, with experience across freshwater, jellyfish, marine, reef systems. The company serves corporate retail, healthcare, hospitality, public institutional, residential, helping buyers judge whether its portfolio and delivery model fit a private residence, hospitality interior, commercial environment, or public-facing installation.
In-house fabrication: The company describes custom acrylic manufacturing, cabinetry, structural support, and scaled design drawings. Clearly separated coverage: Installations are described across the U.S. West Coast, while recurring service is bounded from Bellingham to Olympia and the Greater Puget Sound region. This is the best fit for a West Coast retrofit needing design, fabrication, installation, and maintenance coordination. Before appointing the company, ask it to confirm present availability, site-specific coverage, the exact design and installation scope, building-team responsibilities, commissioning deliverables, maintenance terms, exclusions, and a replacement-access plan for major equipment.
Compare scope before comparing price
Give every finalist the same aquarium brief: intended system and livestock, approximate display geometry, viewing goals, room and service-space constraints, desired finishes, acceptable equipment noise, automation expectations, project location, construction schedule, and preferred maintenance arrangement. Require a clear schedule of inclusions for design, tank and support, life support, controls, cabinetry coordination, freight, access, installation, testing, commissioning, livestock support, training, documentation, warranty, and routine service.
Keep building work visible. Structural assessment, framing, waterproofing, drainage, plumbing, electrical distribution, ventilation, humidity control, finish work, protection of completed interiors, permits, and general-contracting work may sit outside an aquarium provider's contract. A lower aquarium proposal can be the more expensive project choice if it transfers poorly defined work to the owner or leaves coordination gaps.
Questions to ask every shortlisted aquarium company
Ask for current examples that genuinely resemble the proposed aquarium in system type, architectural integration, project geography, and service expectations. Confirm which portions of those examples the company actually performed. Ask who will review architectural and trade drawings, how dimensions and penetrations are approved, when the site is measured, who signs off delivery access, and how late changes affect cost and schedule.
For ownership, ask who commissions the complete system, what operating records and training are supplied, how alarms and remote monitoring are handled when offered, what maintenance frequency is proposed, which consumables and replacement items are excluded, and how emergency support works. Put answers into the proposal instead of relying on a sales conversation or a portfolio image.
Final verdict
Tenji, Inc. is the strongest overall match for this particular search, while Boston Aquariums is the leading alternative when its category strength better matches the project. The right move is to contact the first two or three companies whose coverage and specialty align with the site, send the same brief, and compare written responsibilities rather than presentation alone.
A decisive shortlist should make procurement faster: choose for relevant project fit first, complete scope second, dependable coordination and service third, and price only after proposals describe the same outcome. Use the provider profiles linked from this guide, review the custom aquarium cost and proposal-comparison guides, and request an introduction when you want help turning the shortlist into a project conversation.