Pincushion Urchin
Tripneustes spp.
Reef Compatible: Yes
Care Level: Intermediate
Disposition: Peaceful
Minimum Tank Size: 30 gallons
Mature Size: 3 inches
| Feature | Detail |
|---|---|
| Reef Compatible | Yes |
| Care Level | Intermediate |
| Disposition | Peaceful |
| Minimum Tank Size | 30 gallons |
| Mature Size | 3 inches |
FAQ
Is the pincushion urchin safe to keep with other reef inhabitants?
Yes, the pincushion urchin is reef compatible and generally peaceful, making it suitable for cohabitation with most reef-safe species.
What is the typical size of a mature pincushion urchin?
A mature pincushion urchin reaches a size of about 3 inches.
What tank size is required to keep this species?
A minimum tank size of 30 gallons is recommended.


Max Randall –
The pincushion urchin has been thriving in my 40-gallon reef tank for six months. It’s active but not aggressive and blends well with the other inhabitants. Easy to maintain and a great addition to a balanced reef setup.
Kevin Smith –
I added this urchin to my intermediate reef tank after researching compatible species. It’s peaceful and has not caused any issues with corals or fish. Growth is steady and it looks healthy.
Ruth MacLeod –
This species is a reliable choice for reef tanks. It doesn’t eat corals or compete for space. I appreciate its calm nature and how it fits into the ecosystem without causing disturbances.