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Stick polyps (Acrozoanthus australiae)
AI illustration, not an ID reference

Stick polyps

Acrozoanthus australiae

CoralsSaltwater

Care level
Moderate
Maximum size
2 cm
Temperature
24–27 °C
pH
8–8.4
Light
Medium
Flow
Medium
Diet
Photosynthetic

Care at a glance

Stick polyps do not grow on rock but on the leathery tube of a marine worm; the polyps cover that tube entirely, so the whole thing looks like an overgrown stick. In principle the worm still lives inside and gives the colony a firm, flexible base.

They are easy under moderate light and moderate flow, but without the worm the tube eventually rots away; many keepers therefore transfer the colony onto rock in good time. They belong to the zoanthid relatives, so wear gloves when handling them.

Good to know

  • Palytoxin risk — wear gloves

Related species

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Values are mainstream hobbyist guidance, not gospel — always watch what your own animals need.