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Species profile

Zhou’s Scarlet Goby

Rhinogobius zhoui

Common names: Zhou's Scarlet Goby

Recognized speciesGobies

Adult size

Up to 3.6 cm

Up to 3.6 cm

Countries of origin

  • See all stock from China

Good fit for your tank?

Good fit for

  • A mature, stable aquarium

Think carefully if

  • You only want to keep one or two, because this fish needs a group of 5 or more
  • Your tank is newly set up

A small, vivid scarlet goby from a few streams in Guangdong, China. Keep a group of at least 5 in 54 litres or more.

Appearance and Identification

A small, vivid scarlet goby from a few streams in Guangdong, China. It needs cool, fast, clean water, and it has been bred at home, though not easily.

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 220–270 litres an hour
Suggested heater
About 50–75 W for this tank
Minimum tank volume
54 litres
Minimum tank length
60 cm
Minimum group size
5
Recommended group size
8
Activity level
Low
Flow preference
High
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 eat baby shrimp. Choose its tankmates with care.

Check tankmates for this species

Water Parameters

Temperature
19–24 °C
pH
7–7.8
GH
5–12
Stability importance
Very important

Keep the pH steady, because this fish is sensitive to swings. This fish prefers cooler water than most tropical fish, and it may not need a heater in a warm room.

Parameter caveat
Add this fish only to a mature, fully cycled tank, and keep up regular water changes.

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
Easy
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
Asia, China
Natural habitat
Freshwater Stream
Audience level
Intermediate

Classification

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

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