Saltwater Aquarium Inverts for Marine Reef Aquariums: Hard Tube Coco Worm
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Hard Tube Coco Worm
Due to variations within species, your item may not look identical to the image provided.
Hard Tube Coco Worm (Protula bispiralis)
Additional locales and sizes may be available!

Quick Stats

Care Level Difficult
Temperament Peaceful
Color Form Orange, Pink, Red, White, Yellow
Diet Filter Feeder
Reef Compatible Yes
Water Conditions 72-78° F, dKH 8-12, pH 8.1-8.4, sg 1.023-1.025
Max. Size 7"
Origin Indo-Pacific
Family Serpulidae
Supplements Calcium, Magnesium, Strontium, Trace Elements
Waterflow Low to Medium
Placement Bottom
Compatibility View Chart
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Overview

The Hard Tube Coco Worm, also known as the Hard Tube Feather Duster, Protula Tubeworm, or Hard Tubeworm, has a crown that can be white, yellow, orange, pink, or red. The radioles may be banded or patterned. Younger Hard Tube Coco Worms have bi-lobed crowns, while the crowns of older individuals are spiraled.

The Hard Tube Coco Worm secretes a calcareous tube, approximately 1/2 inch in diameter and 5-8 inches long, to house its vulnerable worm body. When disturbed, it can quickly retract its crown and close its operculum to shut the top of its tube. It usually anchors its tube in a crevice of the rocky reef or in the gravel along current-swept reef slopes. It uses the radioles to filter out floating plankton.

The aquarium for the Hard Tube Coco Worm should be well-established and contain a rock and gravel substrate. The Hard Tube Coco Worm requires calcium and the proper alkalinity to grow. It is extremely intolerant of poor water quality and copper-based medications.

In the aquarium it is difficult to maintain, and will need supplements of phytoplankton and liquid organic foods.

Approximate Purchase Size: 4" to 7"

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