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Feeding is the defining challenge of mandarin dragonet keeping. In the wild, mandarin dragonets spend most of their day slowly picking tiny copepods off live rock and rubble. In captivity, most mandarins refuse frozen or prepared foods and require a sustained supply of live copepods to survive long-term.
Mandarin Dragonet Feeding at a Glance
| Diet type | Carnivore / live food specialist |
| Primary food | Live copepods - essential for most mandarins |
| Secondary food | Live amphipods |
| Frozen food? | Most refuse - captive-bred more likely to accept |
| Picky eater? | Yes - one of the most demanding feeders in the reef hobby |
| Refugium required? | Strongly recommended - near essential |
Live Copepods - The Primary Food Source
Mandarins are slow, methodical foragers that graze continuously throughout the day - not burst feeders. The tank must maintain a self-replenishing copepod population at all times. A refugium seeded with copepods is the most reliable long-term solution. See our Best Refugiums guide. Supplement with bottled live copepods, especially in the first 6-12 months. Add at night with the protein skimmer off for 1-2 hours. See our Best Copepods for Reef Tanks guide.
Live Amphipods
Mandarins will also eat live amphipods. A refugium supporting both copepods and amphipods provides a more diverse and nutritious food base.
Frozen Mysis - Training Mandarins to Accept Frozen Food
Most wild-caught mandarins refuse frozen mysis. Captive-bred specimens are significantly more likely to accept it. See our Captive-Bred vs Wild-Caught Mandarin Dragonets guide. To train a wild-caught mandarin:
- Target-feed frozen mysis with a feeding stick near the mandarin while it is actively foraging
- Mix frozen mysis with live copepods - the movement attracts the mandarin and it may consume frozen food alongside them
- Try frozen Cyclops which more closely resembles copepods in size
- Be patient - some mandarins take weeks or months, and some never accept frozen food
Foods to Avoid
- Relying solely on bottled copepods without a refugium: Cannot sustain a mandarin long-term
- Standard flake or pellet food: Most mandarins will not eat these
- Overfeeding frozen brine shrimp: Low nutritional value and most mandarins won't accept it
- Assuming the mandarin is eating because it appears active: Mandarins remain active and colorful even as they starve - monitor body condition, not behavior
How to Tell If Your Mandarin Is Eating Enough
Body condition is the only reliable indicator. Check weekly:
- Healthy: Rounded, full belly - plump from above and from the side
- Underfed: Flat or slightly concave belly - spine may become visible from above
- Severely underfed: Pinched belly, visible spine - intervene immediately
See our Mandarin Dragonet Not Eating guide.
Feeding Schedule
- Continuous: Live copepods from a mature refugium
- Weekly or bi-weekly: Dose bottled live copepods, especially in the first year
- If accepting frozen food: Target-feed frozen mysis once or twice daily with a feeding stick