Saltwater Fish
Yellow Watchman Goby.
A cheerful yellow goby that stands guard at its burrow, often teaming up with a pistol shrimp in a classic partnership. Peaceful, reef-safe, and beginner-friendly; give it a sand bed and rockwork in a 10-gallon-plus reef.
We keep this species at our Erie store. Come and see it in the tanks, or call (814) 456-9445 and ask what we have in right now.
Sea Cave keeps this species. You will find these in the tanks at 660 East 14th Street in Erie. We never ship live animals.
- Condition
- new
- Fulfillment
- Local pickup — Erie, PA
We never ship fish, coral, or invertebrates — every animal here is one you meet in person. Each one is acclimated and health-checked in-house before it goes out into the display tanks. This is a species we keep, and what is swimming on any given day changes with the deliveries, so please call (814) 456-9445 before you drive in.
Care at a glance
What to know before you take one home.
- Care level
- Beginner
- Temperament
- Peaceful
- Community
- Community safe
- Adult size
- 4"
- Min tank size
- 10 gallons
- Diet
- Carnivore
- Scientific name
- Cryptocentrus cinctus
Good tank mates
A peaceful, reef-safe bottom dweller that mixes well with calm community fish like firefish, clownfish, cardinalfish, and small wrasses, and it famously forms a partnership with pistol shrimp that share its burrow. It will not bother corals or other tankmates. Avoid keeping two watchman gobies together unless they are a pair, and skip large predators that might eat it.
Good to know
This goby teams up with a near-blind pistol shrimp that digs and maintains their shared burrow while the goby acts as a lookout, tapping the shrimp with its tail to warn of danger.
What is in the tanks and each animal's temperament vary — call (814) 456-9445 for pairing advice.
Good tankmates
Plays well with.
Species we’d keep in the same tank, with why each pairing works. What is in the tanks and each animal’s temperament vary — call (814) 456-9445 for advice on pairing.
New to stocking a tank? Read our guide on which fish live together.
Ultra Black Ice
Equally peaceful and occupies the mid-to-upper water column, leaving the goby's sand-burrow territory entirely undisturbed in a shared reef tank.
Firefish Goby
Shy and peaceful; hovers in the water column near live rock rather than competing for sand territory. Any territorial displays from the watchman are benign posturing with no biting or nipping reported — both species share a beginner-friendly temperament. Best in tanks 30 gallons or larger where the watchman's burrow zone does not consume the entire footprint.
Royal Gramma
Peaceful basslet that claims crevices in rockwork — a completely different niche from the sand-burrowing goby. Hobbyist data from Reef2Reef consistently shows successful co-keeping, including long-term reports with clownfish in the same system.
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Tiger Pistol Shrimp
Forms a well-documented mutualistic symbiosis with this goby — the nearly blind shrimp excavates and maintains a shared burrow while the goby stands guard, making them the defining pair for this species in captivity.
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Tailspot Blenny
Small, peaceful algae grazer that works the rockwork surface — no overlap with the goby's sand-burrow lifestyle. Multiple aquarists report zero conflict between these two species in tanks 40 gallons and up.
Visit the store
660 East 14th Street,
Erie, PA.
Mon–Fri 12–6 · Sat 11–4 · Sun closed. Call ahead on livestock — what's on the floor rotates.