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Knight goby (Stigmatogobius sadanundio)
Photo: Sahat Ratmuangkhwang · CC BY 3.0 via Wikimedia Commons

Knight goby

Stigmatogobius sadanundio · Oxudercidae

Also known as Fan dancer goby

Intermediate

A spotted, cave-holding brackish goby native to Indian estuaries; peaceful with its own size.

In short: A knight goby needs at least 110 L (29 US gal), water at 22–28 °C (72–82 °F) and pH 7.5–8.2. It is semi-aggressive, usually kept singly, and rated intermediate to keep.

Updated

Minimum tank
110 L (29 US gal)
Temperature
22–28 °C (72–82 °F)
pH
7.5–8.2
Adult size
9 cm (3.5 in)
Group size
1+

Care requirements

Minimum tank volume
110 L (29 US gal)
Temperature
22–28 °C (72–82 °F)
pH
7.5–8.2
Hardness
10–25 dGH
Lifespan
3–6 years
Diet
Carnivore — bloodworm, mysis, sinking pellets.
Care level
Intermediate

Origin & habitat

Native region
India, Sri Lanka and Southeast Asia
Water type
Brackish
Biotope
Estuarine creeks over sand and wood
Natural conditions
Specific gravity 1.005–1.010; sand, caves, gentle flow.

Behaviour & stocking

Temperament
Semi-aggressive
Minimum group
1 fish
Swims
Bottom
Good tank mates
Molly
Bumblebee goby in a big tank
Glassfish
Avoid
Small shrimp
Tiny fish
Puffers

Breeding & difficulty

Breeding difficulty
Intermediate
Sexing
Males have longer, taller dorsal fins.
Notes
Cave spawner; male guards the eggs.
Common ailments
Ich
Bacterial fin rot in soft water
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