JJ Aquarium

Tucked into Antioch, California, JJ Aquarium is a locally owned fish store that has built a loyal following through clean tanks, healthy livestock, and staff who genuinely care about the hobby. Owners John and Larry (referred to lovingly as "Lerry" by regulars) along with team members like David have created a shop where education comes before the hard sell. Multiple reviewers note that staff will patiently answer questions and offer honest recommendations without pushing unnecessary products — a quality that keeps hobbyists coming back.

The store leans heavily into freshwater, carrying a solid variety of fish alongside live plants, shrimp, and quality substrate for planted tank setups. They stock locally bred fish, which speaks to the health and hardiness customers consistently praise. One reviewer mentioned buying a betta that's still thriving, while another chatted with staff about Medaka rice fish and corydoras while picking up frozen food and live blackworms.

The shop also carries both budget and high-end equipment and supplies, plus harder-to-find hardscape like elephant skin and dragon stone — the kind of decorative rock that makes aquascaped tanks look magazine-worthy but rarely shows up at chain pet stores. JJ Aquarium is continually expanding, setting up new display tanks that include aquascaping and nano tank setups. This kind of forward momentum suggests a store that's invested in growing alongside its customer base.

Prices consistently get praise for being fair — several shoppers noted they were actually cheaper than the big-box alternatives, with healthier fish to boot. The store can get busy, and a handful of reviews mention inconsistent service depending on who's working. But the overwhelming consensus points to a shop where passionate, knowledgeable people are building something worthwhile for East Bay fishkeepers.

If you're in the Antioch area looking for healthy freshwater livestock, quality hardscape, or just honest guidance on your next tank build, JJ Aquarium delivers.