Ultimate Aquarium Inc

Ultimate Aquarium Inc. on the San Mateo Peninsula has earned a reputation as the Bay Area's go-to independent fish store, drawing hobbyists from as far as San José who say the drive is absolutely worth it. Owner Joe and his staff run a shop that covers serious ground across freshwater, saltwater, and koi pond keeping — all under one roof with tanks that reviewers consistently describe as crystal clear and meticulously maintained.

The freshwater selection is deep: cardinal tetras, green neons, pork chop rasboras, corydoras catfish, bettas, shubunkin goldfish, and some striking angelfish specimens that catch people's eyes. Saltwater keepers will find a solid coral selection alongside marine fish and invertebrates, and pond owners praise the store as their reliable source for koi and pond supplies. Live plants are available, though the stock leans toward popular species rather than rare cultivars — something plant enthusiasts should note.

The store also carries a decent range of aquarium supplies, tanks, and décor, though the real draw is the livestock. What sets Ultimate Aquarium apart from the big-box pet stores is the staff's willingness to spend genuine time with customers. First-time aquascapers mention Richard by name for his patience and guidance, and multiple reviewers highlight that the team will test your water parameters, discuss fish temperament, and offer stocking advice without condescension or pressure to upsell.

The store even takes in fish that hobbyists can no longer keep — a small but meaningful gesture that speaks to their investment in the local aquarium community. Pricing gets frequent praise for being reasonable, with bundle deals like three schooling fish for fifteen dollars adding extra incentive. The store sits in an area with limited independent aquarium options on the Peninsula, making it an essential stop for anyone who's outgrown the Petco and PetSmart selection.

For Bay Area aquarists who value healthy livestock, fair prices, and staff who genuinely care about your tank's success, Ultimate Aquarium delivers.