Invertebrates
Long-Spine Sea Urchin.
A striking reef invertebrate with a small central body and a dramatic halo of long, needle-thin spines. Long-spine urchins are excellent algae grazers that roam the rockwork keeping surfaces clean. Their sharp spines make them a bold living accent and a natural deterrent in the tank.
Live fish are priced per supplier batch — prices may vary. Call to confirm current pricing.
- Condition
- new
- Fulfillment
- Local pickup — Erie, PA
Live animals are sold in store only — we do not ship fish, coral, or invertebrates. Every animal is acclimated and health-checked in-house before it reaches the sales floor. This is a species we carry — it's most likely in the tanks around delivery days, but live stock changes daily. Please call (814) 456-9445 to confirm availability before you drive in.
Care at a glance
What to know before you take one home.
- Care level
- Intermediate
- Temperament
- Peaceful
- Community
- Community safe
- Adult size
- 4"
- Min tank size
- 30 gallons
- Diet
- Herbivore
- Scientific name
- Diadema setosum
Good tank mates
Peaceful with fish and most tankmates, though its long spines can be hazardous to handlers and it may bump or dislodge unsecured corals as it grazes.
Good to know
Its long spines can pivot toward a shadow or threat, and it uses them along with tube feet to slowly wander the reef at night.
Stock and individual temperament vary — call (814) 456-9445 for pairing advice before you buy.
More in Invertebrates
You might also consider.
Visit the store
660 East 14th Street,
Erie, PA.
Mon–Fri 12–6 · Sat 11–4 · Sun closed. Call ahead on livestock — what's on the floor rotates.