The Yellow Watchman Goby is a stocky, bright-yellow (sometimes grey) goby known for its symbiotic partnership with pistol shrimp.
The near-blind shrimp digs and maintains a burrow while the sharp-eyed goby stands guard, retreating into the shared den at any danger.
It is hardy, peaceful, and reef-safe.
Even without a shrimp it makes a charming bottom-dweller, perched on the sand watching the tank with its large eyes.
Its burrowing and sand-sifting behaviour helps keep the substrate turned over and aerated.
Housing
Provide a cycled 110L (30 gal) tank with a deeper sand bed (5 cm+) for burrowing and live rock placed on the glass so digging cannot collapse it.
Keep salinity 1.024-1.026, temperature 23-27°C (74-80°F), pH 8.1-8.4, and nitrate low.
A secure lid is important because, like other gobies, they jump.
Pair it with a single Tiger or Randall's pistol shrimp for the classic partnership.
Stable water and a soft sand bed it can excavate keep this goby content and natural in behaviour.
Diet
The Yellow Watchman is a carnivore.
Offer frozen mysis and brine shrimp, finely chopped seafood, and sinking marine pellets, fed once or twice daily.
It will also sift the sand for tiny morsels and microfauna.
Most individuals feed readily once settled, though shy ones eat more confidently with their pistol-shrimp partner present.
Ensure food reaches the bottom, as this goby rarely chases food high in the water column and can be outcompeted by faster fish.
Health
Watchman gobies are hardy and disease-resistant in stable water.
The main risks are jumping from an open tank and stress from aggressive tankmates or unstable parameters, which can lead to ich or bacterial infection.
Quarantine new fish, keep nitrate low, and provide secure burrows.
Watch that it is getting enough food, since a thin, hollow-bellied goby signals it is being outcompeted.
A calm, sand-bedded tank keeps it healthy for years.
Temperament
Peaceful and reef-safe, the Yellow Watchman spends its time guarding its burrow and watching the tank.
It is harmless to corals and most tankmates but may squabble with another bottom-dwelling goby over territory.
Keep one per tank unless adding a bonded pair, and avoid housing it with larger predators or very aggressive fish.
With its pistol-shrimp partner it shows interesting cooperative behaviour that makes it a standout reef resident.
Beginner
Beginner
Beginner
Beginner
Beginner
Beginner