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Court jester goby (Koumansetta rainfordi)
Photo: Tappinen · CC BY-SA 3.0 via Wikimedia Commons

Court jester goby

Koumansetta rainfordi · Gobiidae

Also known as Rainford's goby, Old glory

Intermediate

A striped nano goby that grazes film algae off rock and sand in a mature tank.

Minimum tank
60 L
Temperature
23–27 °C
pH
8.1–8.4
Adult size
7 cm
Group size
1+
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Reef & marine husbandry
Specific gravity
1.023–1.026
Reef safety
Reef safe
With corals
Reef safe.
With inverts
Reef safe.
Minimum in a mixed reef
60 L
Minimum fish-only (FOWLR)
60 L
Aggression
Peaceful.
Feeding
Needs algae film plus small daily feeds.
Care requirements
Minimum tank volume
60 L
Temperature
23–27 °C
pH
8.1–8.4
Hardness
8–12 dGH
Lifespan
2–5 years
Diet
Omnivore — film algae, cyclops, mysis, small pellets.
Care level
Intermediate
Origin & habitat
Native region
Western Pacific
Water type
Saltwater
Biotope
Silty algae-covered rubble
Natural conditions
Mature rock, gentle flow.
Behaviour & stocking
Temperament
Peaceful
Minimum group
1 fish
Swims
Bottom
Good tank mates
Clownfish
Firefish
Cardinalfish
Avoid
Aggressive dottybacks
Bare new tanks
Breeding & difficulty
Breeding difficulty
Advanced
Sexing
Not reliably sexable.
Notes
Rarely bred.
Common ailments
Starvation in immature tanks
Marine ich

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