SeafanEmergencies

Mandarins and dragonets

Spotted mandarin

Synchiropus picturatus

Also sold as Psychedelic mandarin, Picturesque dragonet

Not for beginners

Spotted mandarin (Synchiropus picturatus), photographed in the sea or an aquarium
Photo: Daiju Azuma, CC BY-SA 2.5, via Wikimedia Commons
Care level
Advanced
Adult size
7.6 cm in aquariums
Minimum tank
114 litres
Temperament
Peaceful
With corals
Reef safe
Captive-bred
Captive-bred sold, limited
IUCN status
Least Concern
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How do you care for the spotted mandarin?

Peaceful.

Feeding

Carnivore: pods.

As green mandarin.

Tank and special needs

Plan for at least 114 litres of water (the care sheet says 30 US gallons).

Mature tank.

Corals and invertebrates

None.

Which tankmates suit the spotted mandarin?

As green mandarin.

Suggested order in a mixed tank: add after the first peaceful fish.

More than one spotted mandarin

Only as a mated pair, or two juveniles added together. A third spotted mandarin is usually driven out.

Other fish

Checked against the other 59 fish in this guide, assuming a tank big enough for both. Individual fish differ, so treat this as a starting point.

Take care (7)

  • Maroon clownfishMaroon clownfish is aggressive and may bully the spotted mandarin, especially if the bully is added first.
  • Rainford's gobyBoth eat copepods from the rock; a tank under about 400 litres rarely grows enough for two.
  • Humbug damselHumbug damsel is aggressive and may bully the spotted mandarin, especially if the bully is added first.
  • Six line wrasseBoth eat copepods from the rock; a tank under about 400 litres rarely grows enough for two.
  • Leopard wrasseBoth eat copepods from the rock; a tank under about 400 litres rarely grows enough for two.
  • Powder blue tangPowder blue tang is aggressive and may bully the spotted mandarin, especially if the bully is added first.
  • Mandarin dragonetBoth are dragonets that use the same sand; give each its own area. Both eat copepods from the rock; a tank under about 400 litres rarely grows enough for two.
Usually fine together (52)

Invertebrates

Only the invertebrates with a known risk are listed.

Take care (2)

  • Tiger tail sea cucumberA stressed or dead tiger tail sea cucumber can release toxins that harm fish; cover pump intakes.
  • Sea appleA stressed or dead sea apple can release toxins that harm fish; cover pump intakes.

Corals and anemones

Only the corals and anemones with a known risk are listed.

Take care (1)

These checks follow the reasons fish and invertebrates clash: same species or genus, similar shape, mouth size, temperament, food, burrows, tank size and the order they are added. Individual animals differ; every source agrees on that.

Quarantine and health

As green mandarin.

New fish are the most common way disease gets into a reef tank. Quarantine every fish in a separate tank before it joins the display, and choose a method that suits its tolerance of copper.

Captive-bred or wild?

ORA has bred spotted mandarins (2010 coverage).

What does it cost in the UK?

about £47. This is one UK retailer’s listing on 21 October 2026, not a market average, and every item was sold out on that day.

Sources

  1. LiveAquaria (US retailer) care sheetRead 21 October 2026, read in full. Used for: stats.
  2. Reef Builders articleRead 21 October 2026, search summary only. Used for: captive-bred.
  3. FishBase species summaryRead 21 October 2026, read in full. Used for: max length.
  4. Kraken Corals (UK retailer) catalogueRead 21 October 2026, read in full. Used for: UK price.

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