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Spotted Dragonet
Synchiropus picturatus
Animalia›Chordata›Actinopterygii›Perciformes›Callionymidae
📍 Western Pacific, Philippines to Indonesia
Psychedelically patterned relative of the Mandarin Dragonet with blue, orange, and green circular spots. Equally challenging to keep — requires a mature reef with abundant live copepods. Often confused with the Mandarin but has smaller eyes.
Care Guide
Diet
Spotted Dragonets are obligate carnivores requiring live copepods and amphipods as their primary food source. Feed small amounts daily, as they graze continuously on microcrustaceans in a mature reef. Supplemental feeding with frozen copepods or mysis shrimp may be accepted but live cultures are essential for long-term health.
Behavior
This species is peaceful and bottom-dwelling, spending most of its time grazing along the substrate and rockwork for small prey. They are relatively sedentary and non-aggressive toward other fish, though they may be outcompeted for food by more aggressive feeders. Males display vibrant coloration during courtship, though breeding behavior is rarely observed in captivity.
Breeding
Breeding Spotted Dragonets in captivity is extremely rare and poorly documented. They require specific environmental triggers and massive populations of live copepods to support larvae, making successful reproduction virtually impossible in home aquariums. Captive-bred specimens are not commercially available.
Tank Mates
Peaceful reef fish with similar water requirements; won't compete for copepod food sources
Same dietary needs create competition for limited copepod populations; only in very large, mature reefs
Small, peaceful bottom-dweller that occupies different feeding niche
Peaceful invertebrate that won't prey on dragonets; maintains separate feeding zone
Non-competitive, peaceful, and helps maintain reef health without impacting copepod availability
Common Diseases
Starvation/Malnutrition
Rapid weight loss, lethargy, faded coloration, refusal to eat prepared foods
Establish robust copepod and amphipod cultures; ensure tank has been established 6+ months before introduction; consider adding macroalgae refugium to boost prey populations
Parasitic Infections (Ich, Velvet)
White spots, excessive scratching, rapid breathing, cloudy eyes
Quarantine immediately; copper-based treatments are effective but avoid in reef tanks; maintain pristine water quality and temperature stability
Bacterial Infections
Torn fins, lesions on body, cloudy appearance, loss of appetite
Perform 25% water changes daily; maintain optimal water parameters (pH 8.1-8.4, SG 1.020-1.025); antibiotic foods may help if caught early
Stress-Related Decline
Hiding, color fading, reduced feeding, susceptibility to disease
Ensure mature reef with abundant live food; minimize tank disturbances; maintain stable temperature (24-28°C); avoid aggressive tankmates
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Quick Facts
- pH
- 8.1–8.4
- diet
- live copepods/amphipods
- maxSize
- 3 inches
- salinity
- SG 1.020–1.025
- minTankSize
- 55 gallons
- temperature
- 75–82°F (24–28°C)
Temperature
75–82°F
24–28°C