Quarantined | Two Spot Goby

What “Quarantined” means

Every animal sold under this listing goes through YoCamron’s Aquatics full quarantine program — treated preventively for the common pathogens, observed daily, and confirmed eating — before it goes home with you.

Most livestock losses in this hobby aren’t bad luck. They’re pathogens that arrive with a new animal — ich, velvet, gill and body flukes, internal parasites — and stay invisible for the first 1–2 weeks while the animal is stressed from shipping. By the time you can see the problem, it’s in your display tank, and every animal you own is in the fight. Quarantine exists to run out that clock in our tanks instead of yours.

Our process

• Dedicated quarantine systems, separate from our display and sale tanks.
• Preventive treatment for the pathogens that actually kill new arrivals, instead of waiting for symptoms.
• Daily observation — breathing rate, body condition, behavior — so problems get caught while they’re still small.
• Feeding confirmation. Nothing goes home until it’s eating in front of us. An animal that eats is an animal that travels well.

Quarantined to order

Nothing we sell online is pre-quarantined and waiting on a shelf. Every quarantined animal is quarantined to order — your purchase starts the process, and the clock starts the day your animal reaches our facility.

For a saltwater fish like this one, plan on up to 90 days before it goes home.

Add up to two more weeks in front of that. If we do not already have the animal in-house, sourcing it is the first step — and that time sits on top of the window above.

This is not a rush purchase, and it can’t be turned into one — the entire value of quarantine is time. If you need your livestock by a particular date, contact us before you order and we’ll schedule the arrival around it. If you need something this week, the non-quarantined listing is the honest choice. The full process — and how to decide which tier is yours — is explained in Quarantined vs Non-Quarantined.

The guarantees

• Shipped — Early AM Overnight only: 48-hour live arrival guarantee from confirmed delivery. Next Day Air (standard Overnight), 2-Day and USPS Priority carry no live arrival guarantee, on any tier.
• Local pickup or delivery: 28-day live guarantee — bring a water sample from your aquarium so we can test it before your livestock goes home with you.
• Maintenance clients: 60-day live guarantee on any livestock you buy from us, for as long as we service your aquarium on a plan of at least twice a month — weekly, every 10 days, or biweekly. Monthly plans carry 28 days. Nobody else in the trade puts that in writing.
• Sourcing: if the animal is not already in-house, add up to two more weeks in front of the window above — that applies on every tier.
• Claims: video of the sealed, unopened bag, opened on camera, with the animal on a white paper towel, inside the window.

Why quarantined is the right choice

If you have an established display tank, the math is simple: the premium on a quarantined animal is small next to the cost of treating — or losing — everything already in your tank. It also means you can skip running a hospital tank at home, which done properly is its own aquarium, its own months of patience, and its own chance to get something wrong.

The honest caveat: many of these species are also available from us non-quarantined for less. Those carry a 1-hour live arrival window on Early AM Overnight — or 24 hours on local pickup or delivery with a tested water sample — and no refunds, returns, or credits beyond that. There is also a middle rung: the Lightly Medicated listing gets one short prophylactic course and is covered for 24 hours on Early AM Overnight, or 7 days on local pickup or delivery with a tested water sample. Next Day Air (standard Overnight), 2-Day and USPS Priority carry no live arrival guarantee, on any tier. If you already run a proper quarantine setup at home, that’s a fair trade and you should take it. If you don’t, this listing is the right one. (You’ll sometimes see “quarantined” abbreviated as QT — same thing.)

Two Spot Gobies (Signigobius biocellatus) carry a pair of dark, yellow-rimmed eyespots on their twin dorsal fins. Raise those fins, hold station just off the sand, and shuffle sideways in the stop-start way this fish moves, and the shape stops reading as a small goby — the long-standing reading of the pattern is crab mimicry, which is where the other common name, Crab-eye Goby, comes from. It is an odd animal to watch, and we understand why people want one.

We also have to be straight about why most of them die. This fish eats by taking a mouthful of sand, sifting out the small invertebrates living in the spaces between the grains — copepods, amphipods, worms — and pushing the cleaned sand back out through its gills. That is not a preference it can be talked out of. It is close to the entire way the animal feeds, and many specimens never learn to take prepared food out of the water column at all. In a system that cannot replace those invertebrates as fast as the goby removes them, nothing dramatic happens: the fish keeps hunting, slowly thins, and dies weeks or months later. That is the ordinary outcome for this species in the hobby, not the unlucky one.

What it actually needs is a mature tank. A large, established sand bed — two to three inches deep, with real open area rather than a strip between rocks — and a living population of the small invertebrates it hunts, replenished faster than one fish can strip it out. In practice that means a refugium plumbed into the system and running, sand that has been in place long enough to have built its own fauna, and a display that has been up for the better part of a year. On top of that, plan to target-feed several small meals a day — live or frozen mysis, brine shrimp, copepods — squirted down at the sand where the fish is working, and accept that some individuals will still ignore them.

It is a poor choice for a new tank, and a poor choice for a small one. You will see this fish listed elsewhere with a ten-gallon minimum. That number describes the room the goby needs to swim, which was never the problem. It says nothing about the sand area needed to feed it, and ten gallons of sand cannot feed it. If you would not keep a Mandarin Dragonet, do not keep this one — it is the same failure, slower and quieter.

In the wild they live in monogamous pairs that dig and hold a shared burrow, and a pair is more active and more watchable than a single fish. They cannot be sexed from the outside, so a pair in practice means two fish taken from the same tank that already tolerate one another; two strangers will fight. Toward other species they are peaceful to the point of timid. Adults reach about four inches, though most fish in the trade are nearer three.

Scientific name: Signigobius biocellatus
Origin: Western Pacific — sand and silt bottoms of lagoons and coastal bays, close to rubble, coral or leaf-litter cover, 1–30 m
Water parameters: Temp 72–78°F · Salinity 1.023–1.026 · pH 8.1–8.4
Tank requirements: 50 gal minimum; mature system, 2–3" of established sand with open foraging area, refugium strongly recommended
Diet: Micro-carnivore — sifts interstitial invertebrates from sand; target-feed live or frozen mysis, brine shrimp and copepods several times a day
Compatibility: Peaceful with other species; territorial toward its own kind unless a bonded pair
Reef note: It will not eat corals, but it excavates. Keep low corals and frags off the open sand, and do not set rockwork on sand it can dig out from under.

Care level: Difficult · Temperament: Peaceful, territorial with its own kind · Max size: ~4" · Min tank: 50 gal · Reef safe: With caution · Diet: Micro-carnivore — sifts live invertebrates from sand, target-fed small meaty foods several times a day