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Christmas Tree Worm (Spirobranchus giganteus)

Find Christmas Tree Worm across reef-livestock retailers and from fellow hobbyists on ReefDock. Compare sources, check live pricing where available, and review source-tank parameters on Reef-Trak-verified invertebrate listings before you buy.

Christmas Tree Worm
Photo: (c) terence zahner, some rights reserved (CC BY-NC), uploaded by terence zahner · cc-by-nc
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Where to buy Christmas Tree Worm

ReefDock searches the following reef retailers for this invertebrate. Click through to see the live price.

  • Saltwaterfish

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    Search Saltwaterfish
  • Amazon

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    Search Amazon
  • Petco

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About Christmas Tree Worm

The Christmas Tree Worm features a distinctive double spiral of radioles (crowns) in vibrant colors including red, orange, yellow, white, and blue, with a hard, calcified white tube embedded in coral or rock. The worm itself remains hidden inside the tube.

Key facts

Water Parameters
Temperature: 72-78°F pH: 8.1-8.3 Salinity: 1.023-1.025
Family
Serpulidae
Min tank size
20 gallons
Max Size
1
Type
Worm
Origin
Indo-Pacific from the Red Sea to Hawaii, found in coral reefs and rocky substrates.
Compatibility
Christmas Tree Worms are sessile filter-feeders that remain permanently attached to rock or coral. They are compatible with all reef fish and invertebrates but require stable water conditions and cannot be moved once established.
Notes
• Minimum 20 gallon tank • Requires stable reef conditions with strong but not direct water flow to maintain crown extension • Temperature range 72–78°F; sensitive to temperature fluctuations • Feed small planktonic foods (phytoplankton, zooplankton, rotifers) via target feeding • Place in established aquarium with established rock; do not attempt to remove from its tube
Category
Worm
Care Level
Moderate
Appearance Description
The Christmas Tree Worm features a distinctive double spiral of radioles (crowns) in vibrant colors including red, orange, yellow, white, and blue, with a hard, calcified white tube embedded in coral or rock. The worm itself remains hidden inside the tube.
Diet Details
Filter-feeder that consumes plankton and microscopic organisms from the water column. Requires strong indirect water flow and regular feeding with liquid phytoplankton or similar planktonic supplements in established reef aquariums.

Looking for a hobbyist seller?

ReefDock's marketplace lets reef-keepers sell invertebrates directly to other reef-keepers with Stripe-secured checkout and live-arrival photo confirmation. Browse current invertebrates listings on ReefDock, or list your own.

Verify the source tank before you buy

ReefDock is the sister app to Reef Trak. Sellers who maintain a Reef Trak tank log can publish source-tank parameters on eligible invertebrate listings — so you can see the conditions a invertebrate was raised in before you buy. Log this invertebrate on Reef Trak.

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