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Species profile

Knight Goby

Stigmatogobius sadanundio

Common names: Knight Goby, Spotted Goby, Goby

Recognized speciesGobies

Adult size

Up to 9 cm

Up to 9 cm

Countries of origin

  • See all stock from Bangladesh
  • See all stock from India
  • See all stock from Indonesia
  • See all stock from Malaysia
  • See all stock from Singapore
  • See all stock from Sri Lanka
  • See all stock from Thailand

Good fit for your tank?

Good fit for

  • A peaceful community tank with similar-sized fish

Think carefully if

  • You keep smaller fish, which it may eat
  • You keep slow fish with long fins, which it may nip
  • You keep shrimp you want to protect

A pale goby covered in black spots, also called the Spotted or Knight Goby. Keep a group of at least 1 in 68 litres or more.

Appearance and Identification

A pale goby covered in black spots, also called the Spotted or Knight Goby. It prefers slightly brackish water, and it eats fish small enough to swallow.

Check the scientific name when buying, as common names vary between sellers and countries.

Males are often more colourful, with longer fins.

Tank Requirements

Suggested filter
About 140–200 litres an hour
Suggested heater
About 75–100 W for this tank
Minimum tank volume
68 litres
Minimum tank length
75 cm
Minimum group size
1
Recommended group size
4
Activity level
Low
Flow preference
Low
Planting preference
Lightly planted
Hiding places
Yes
Lid recommended
Yes
Jumping risk
Moderate

Provide caves, pebbles and shelter on the bottom, and a good lid, because some gobies can climb or jump.

Behaviour and Tankmates

Spends much of its time resting on the bottom, and darts short distances, often claiming a small territory.

Can usually be kept in a small group if each fish has its own shelter.

Males often defend a small home range.

Best with small, peaceful fish, or in a species tank, because it may struggle to compete for food. It may nip the fins of slow or long-finned fish, and a larger group usually reduces this. It is likely to eat shrimp.

Check tankmates for this species

Water Parameters

Temperature
20–26 °C
pH
7–8.5
GH
10–20
Stability importance
Important

Fairly tolerant of different water, if it is clean and stable.

Parameter caveat
Keep up regular water changes, and acclimatise new fish slowly.

Feeding

Diet types
Carnivore
Feeding frequency
Daily
Preferred foods
  • Small frozen foods such as bloodworm and brine shrimpMany gobies refuse dried food at first.
  • Small live foodsUseful for tempting new fish to feed.

Most prefer small live and frozen foods.

Feed small amounts, and remove anything left after a few minutes.

Breeding

Breeding type
Cave Spawner
Breeding difficulty
Moderate
Parental care
Variable
Baby foods
  • Newly hatched brine shrimpThe fry can usually take this from the start.
  • Crushed flakeA simple addition as they grow.

Spawns inside a cave, and one parent guards the eggs and young. Provide a suitable cave for each pair.

Habitat and Origin

Geographic origin
Bangladesh, India, Indonesia, Malaysia, Singapore, South Asia, Southeast Asia, Sri Lanka, Thailand
Natural habitat
Brackish Water, Estuary
Audience level
Beginner

Classification

Profile type
Recognized species
Genus
Stigmatogobius
Family
Gobiidae
Species group
Fish, Gobies

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