Two Spot Goby

Two Spot Goby

Signigobius biocellatus

Also known as: Twinspot Goby, Signal Goby, Crab-Eye Goby

🧂 Saltwater ✌️ Peaceful 🔴 Advanced 🥩 Carnivore Reef Safe

A unique goby with two large eyespots on its dorsal fins that it raises to mimic a crab when threatened. Sifts sand constantly and hops along the bottom in a charming fashion.

Tank Size

20 gal
minimum (30+ preferred)

Temperature

74–82°F
23–28°C

pH Range

8–8.4
water acidity

Max Size

3"
7.6 cm

Lifespan

2-4 years
typical in captivity

Swim Level

Bottom
preferred zone

Care Notes

Requires a fine sand bed for sifting. Difficult to feed — needs a tank with a healthy microfauna population. Best kept in pairs. May starve in sterile tanks.

Feeding

Live copepods, enriched brine shrimp, and finely minced mysis. Needs a refugium-fed tank for long-term success.

Compatible Tank Mates

Blue Green Chromis 3" Pink Skunk Clownfish 3.5" Skunk Clownfish 4" Orange Skunk Clownfish 4.5" Talbot's Damselfish 2.5" Lubbock's Fairy Wrasse 3" Melanurus Wrasse 5" Cleaner Wrasse 4" Yellow Coris Wrasse 5" Carpenter's Flasher Wrasse 3" Firefish Goby 3" Yellow Watchman Goby 4"

Use Caution With

Ocellaris Clownfish 3" True Percula Clownfish 3" Yellowtail Damselfish 2.5" Blue Tang 12" Yellow Tang 8" Kole Tang 7" Clarkii Clownfish 5" Tomato Clownfish 5" Scopas Tang 8" Convict Tang 8" Azure Damselfish 2.5" Springer's Damselfish 2"

Incompatible With

Maroon Clownfish 6" Blue Devil Damselfish 3" Powder Blue Tang 9" Naso Tang 18" Achilles Tang 10" Purple Tang 10" Three Stripe Damselfish 3" Domino Damselfish 5" Four Stripe Damselfish 3" Jewel Damselfish 6" Blonde Naso Tang 16" Desjardin's Sailfin Tang 16"

Check Compatibility

Want to check if Two Spot Goby is compatible with a specific fish? Use our compatibility checker to build your complete tank.