The Ultimate Aquarium

The Ultimate Aquarium Situated on the Peninsula between San Francisco and San Jose. Serving the San Francisco Bay Area since 1999

Holiday hours:December 24th : 10am-2pmDecember 25th: ClosedDecember 31st: 10am-5pmJanuary 1st: Closed
12/24/2024

Holiday hours:
December 24th : 10am-2pm
December 25th: Closed
December 31st: 10am-5pm
January 1st: Closed

Ultra Tahitian Maxima clams in stock!!! Come check out our new supply of coral, freshwater fish, saltwater fish, and all...
12/14/2024

Ultra Tahitian Maxima clams in stock!!! Come check out our new supply of coral, freshwater fish, saltwater fish, and all your dry good needs.

Black Friday Sale!! All Live Stock 20% Off Today Only! Freshwater Fish, Live Plants, Saltwater Fish, Inverts, and Coral...
11/29/2024

Black Friday Sale!! All Live Stock 20% Off Today Only! Freshwater Fish, Live Plants, Saltwater Fish, Inverts, and Coral!! Stock up your freshwater tank. Pick up that captive bred yellow tang at a discount!! Today only!! No holds. No pick up and pay later. No Raincheck. Limited To Stock On Hand.

Come check out our newest stock! Tanks, fish, coral, and everything else you’ll need. ...
11/29/2024

Come check out our newest stock! Tanks, fish, coral, and everything else you’ll need.

Come check out some of our amazing new stock! Fresh and saltwater! New fish every Tuesday!
11/02/2024

Come check out some of our amazing new stock! Fresh and saltwater! New fish every Tuesday!

We will be closing at 5pm tonight to for Halloween!!
10/31/2024

We will be closing at 5pm tonight to for Halloween!!

Amazing Raffle! See post for details! Drawing on dec21
10/27/2024

Amazing Raffle! See post for details! Drawing on dec21

Got some amazing variety in this week come check it out! Clown killis, arowana, top shelf corals, bettas, and more! ...
10/26/2024

Got some amazing variety in this week come check it out! Clown killis, arowana, top shelf corals, bettas, and more!

Got some new fancy goldfish, oscars, guppies, catfish and a ton of saltwater fish and coral! Come on in and check it out...
10/11/2024

Got some new fancy goldfish, oscars, guppies, catfish and a ton of saltwater fish and coral! Come on in and check it out!

We got some new cool stuff in and some sweet deals! Come clear us out!
10/05/2024

We got some new cool stuff in and some sweet deals! Come clear us out!

Got some stunning new specimens in this week, come on in and give it a look!
08/11/2024

Got some stunning new specimens in this week, come on in and give it a look!

Just some of our newest livestock, come check it out!
07/27/2024

Just some of our newest livestock, come check it out!

Only some of our amazing new stock this week! Come on in and check it out!
06/04/2024

Only some of our amazing new stock this week! Come on in and check it out!

Come check out this weeks new stock!!
05/18/2024

Come check out this weeks new stock!!

Xmas Island Black Tang in Stock!!
05/12/2024

Xmas Island Black Tang in Stock!!

New Shipment of captive bred fish arrived today! Emperor Angels, Multi Bar Angels, Majestic Angels, Royal Grammas, Yello...
06/29/2023

New Shipment of captive bred fish arrived today! Emperor Angels, Multi Bar Angels, Majestic Angels, Royal Grammas, Yellow Tangs, and Mandarin Gobies!! Very limited supply! Come check ‘em out before they’re gone!!

Be prepared for the next power outage. Come grab your battery powered air pump while supplies last! Don’t let your wet...
01/04/2023

Be prepared for the next power outage. Come grab your battery powered air pump while supplies last! Don’t let your wet friends down!

Address

2625 S El Camino Real
San Mateo, CA
94403

Opening Hours

Monday 10am - 6pm
Tuesday 10am - 6pm
Wednesday 10am - 6pm
Thursday 10am - 6pm
Friday 10am - 6pm
Saturday 10am - 6pm
Sunday 10am - 5pm

Telephone

(650) 212-3474

Website

Alerts

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Videos

Jump for Koi! Fresh stock just arrived ✨
Jump for Koi! Fresh stock just arrived ✨

Don't forget the HD button!

This week only, 10% OFF the entire store. Just mention this Facebook post. Limited to stock on hand.

New Arrivals this week!!!! •Now legal in California Glofish. Stop by and see the fluorescent colors on these fish. •ORA - Oceans, Reefs & Aquariums fish and coral. And there newest addition the Kamohara Blenny. • Expected this Friday, we are getting a large assortment of frags and new arrivals from Reef Gen.

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