top of page
Court Jester Goby (Koumansetta rainfordi) - Saltwater Aquarium Fish

🐠 Court Jester Goby (Koumansetta rainfordi)

From ฿424.75Sale Price

🐠 Court Jester Goby (Koumansetta rainfordi)

Marine Reef-Safe Nano Goby • Green-Blue Body With Orange Stripes & White Spots • Genuine Algae Grazer • Beginner-Friendly Marine Fish

 

⚠️ Important Information — Please Read First

We want to be genuinely upfront on this one. This species is genuinely documented to be a finicky feeder, and specimens have been known to decline or even starve without a genuine ongoing supply of filamentous algae and tiny live invertebrate foods in a well-established tank. Please speak with our team about feeding history before purchasing, and be prepared to supplement with algae-rich foods and target feeding if natural grazing isn't sufficient.

 

📋 The Court Jester Goby, also known as Rainford's Goby or the Old Glory Goby, has a genuinely colourful body in green and blue, with horizontal orange stripes running its length and a row of white spots along the upper back.

Native to a genuinely wide range across the Western Pacific, from the Philippines to the southern Great Barrier Reef and Fiji, this species is genuinely timid and peaceful, and does best in a well-established tank with plenty of live rock and sand to graze.

It's fully reef safe, and genuinely a valuable grazer, documented eating hair algae and even red cyanobacteria. We want to be honest that it's best kept singly, or as a known pair in a genuinely large tank with abundant hiding places. It's also a genuine expert jumper, so a tight-fitting lid is essential.

 

🟢🟠 Highlights

🎨 Green-Blue Body With Orange Stripes: A genuinely colourful, popular nano goby

🌿 Fully Reef Safe: Won't harm corals or invertebrates

🪴 Genuine Algae Grazer: Documented eating hair algae and cyanobacteria

⚠️ Genuinely Can Be a Finicky Feeder: Needs an established tank with real natural grazing

⚠️ Genuine Expert Jumper: A tight-fitting lid is essential

Quantity
❌ No Stock Available Today

🧾 A Quick Look at the Court Jester Goby

 

📛 Common Name: Court Jester Goby (Rainford's Goby, Old Glory Goby)

🔬 Scientific Name: Koumansetta rainfordi

👨‍👩‍👧 Family: Gobiidae

🌍 Origin: Western Pacific (Philippines to southern Great Barrier Reef, Fiji)

📏 Max Size: Up to 8.5 cm (≈ 3.3")

🧂 Specific Gravity: 1.020–1.025

🌡️ Temperature Range: 22–26°C (72–78°F)

🧠 Care Level: Moderate — genuine feeding difficulty possible

💖 Temperament: Peaceful; genuinely timid

🌿 Reef Safe: ✅ Yes

🏠 Min Tank Size: 40 L (≈ 10 gallons)

📌 Tank Level: Bottom / Sand Bed

🧬 Stock Type: Wild-collected as standard stock; genuinely also captive-bred by some suppliers

Lifespan: 3–5 years

🍽️ Diet: Omnivore (filamentous algae, cyanobacteria, small invertebrates)

🐣 Reproduction: Egg Layer; genuinely can spawn in home aquariums, though larvae are extremely difficult to raise

You May Also Like

bottom of page