
Source: Wikimedia Commons
Synchiropus splendidus
Often called the most beautiful marine fish with psychedelic maze-like patterns. Feeds on copepods, making it challenging to keep.
The mandarinfish (Synchiropus splendidus) is a small dragonet of the family Callionymidae inhabiting the tropical coral reefs of the western Pacific Ocean. Its intricate camouflage of interlocking blue, green, orange, and black whorls is widely considered among the most beautiful patterning found in any vertebrate. The species lacks scales; instead, its body is coated in a foul-smelling mucus that deters predators. Care requirements are demanding: mandarinfish rarely accept prepared foods and must be sustained by live copepods and other micro-crustaceans proliferating in mature live rock. A well-established reef aquarium of 100 litres or more with densely populated live rock is essential. This species is best suited to experienced marine aquarists.
Source: Wikipedia (CC BY-SA 4.0)
The Mandarin Dragonet lives 5-10 years.
The Mandarin Dragonet grows to 6-8cm.
The ideal temperature for the Mandarin Dragonet is 24〜27℃.
Origin
Tropical coral reefs of the western Pacific Ocean, from the Ryukyu Islands to northern Australia
Lifespan
5-10 years
Sources: LiveAquaria
Edited & verified by: BreederDirect editorial team
The taxonomic, regulatory, and husbandry data on this page are compiled and verified against the authoritative primary sources below.
Sources: CITES Appendices (species not listed) / IUCN Red List / Ministry of the Environment Specified Animal List / Ministry of the Environment: List of Designated Invasive Species
Regulations may change. Always verify the latest information with the relevant authorities.
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Size
6-8cm
Temperature
24〜27℃
Copepods and other micro-crustaceans
Mature 100L+ reef tank
Keep it in a mature tank running for 6+ months. Established live rock teeming with tiny crustaceans is a prerequisite.
Feeds mainly on copepods and other tiny crustaceans and rarely takes ordinary prepared food. Several live rocks with a thriving copepod population are essential.
Maintain 24-27°C. It has no scales and relies on mucus to protect its skin, so keep water quality stable and use medications with care.
Males of the same species fight, so never keep two together. Keep singly or as a pair, and avoid tankmates that compete for copepods.
Many individuals refuse pellets — weaning is key
Advanced. This is an advanced-level species. It requires specialized equipment and advanced husbandry skills with precise environmental control.
The ideal temperature for Mandarin Dragonet is 24〜27℃. Avoid sudden temperature changes and maintain a stable environment.
The average lifespan of Mandarin Dragonet is 5-10 years. With proper care and nutrition, they can live a long and healthy life.
Mandarin Dragonet typically reaches 6-8cm as an adult. Size may vary depending on care conditions and individual genetics.
Mandarin Dragonet feeds on: Copepods and other micro-crustaceans. Aim for a balanced diet with appropriate feeding frequency.
The price of Mandarin Dragonet varies significantly depending on morph, size, and lineage. Check our market price page for the latest pricing information.
Last updated: June 23, 2026