Short Spine Sea Urchin - Medium
Short Spine Sea Urchin - Medium
Short Spine Sea Urchin - Medium
Marine Invertebrates
Starfish

Short Spine Sea Urchin - Medium

ASC Quality CheckedProduct details and care guidance reviewed by Aquarium Supply Co. — not a customer rating.
Currently unavailable SKU: 441-0046-3
$18.99
Packed for live arrival Live orders are packed carefully by item type, weather, route, and destination before they leave.
Clear shipping before checkout Shipping is $39.99, with free shipping over $199. Most in-stock items generally ship in 1–2 business days when conditions are safe.
Arrival support If something needs review, contact support within 1 hour of delivery with your order number and clear unopened-bag/container photos.
$18.99

Need help finding a similar match? Contact support before you order.

Shipping & Arrival See timing, preparation, and what to expect before your order ships. Marine invert fit Use reef-safe, predator-risk, and acclimation guidance before adding marine invertebrates. Contact Support Ask about tank fit, shipping, or practical add-ons before you order.
At a glance
  • Type: Marine Invertebrates
  • Subtype: Starfish
  • Tank maturity: Best for established saltwater systems with stable salinity
  • Acclimation: Slow acclimation matters for many marine invertebrates
  • Reef safety: Review reef-safe and predator-risk notes before ordering
  • Shipping: Most in-stock marine invertebrates generally ship in 1–2 business days
  • Before you buy: Check salinity, temperature, and tankmate risk
  • Support: Ask if you want help with marine compatibility or add-ons
Product details

Overview

Short Spine Sea Urchin - Medium is a marine invertebrate suited for stable saltwater aquariums. Stable salinity, gentle acclimation, and compatible tankmates matter before it is added to a marine system.

Short Spine Sea Urchin - Medium is a marine urchin for stable saltwater aquariums. Confirm tank maturity, available grazing, and reef/tankmate compatibility before ordering.

Care notes: Acclimate carefully, avoid copper exposure, and keep in stable marine water.

  • Tank maturity: Best in established marine systems with stable salinity and temperature.
  • Temperature: Keep the aquarium in a stable marine range with minimal daily swing.
  • pH: Stable marine pH matters more than frequent correction.
  • Salinity: Match salinity carefully before acclimation.
  • Diet: Keep species-appropriate foods ready before arrival.
  • Compatibility: Avoid predators or tankmates that will harass shrimp, snails, crabs, or other invertebrates.
  • Reef-safe notes: Review coral, anemone, clam, or cleanup-crew compatibility where relevant.
  • Acclimation: Slow acclimation is important for many marine inverts.
  • Shipping notes: Marine invertebrates are packed with stable-system arrival in mind.
Shipping & arrival

Marine invertebrates generally ship in 1–2 business days when conditions are safe. Because many inverts are sensitive to salinity swings and rough acclimation, unpack promptly and move slowly through the acclimation process.

  • Match salinity before release.
  • Keep lights lower during acclimation.
  • Do not rush the first transfer into the system.
  • Contact support quickly if something needs review.

Read Shipping & Live Arrival • Read the Acclimation Guide

Before you buy
  • Is the saltwater system mature and stable?
  • Do you know the aquarium salinity and temperature before arrival?
  • Are current tankmates safe for shrimp, snails, crabs, or other invertebrates?
  • Can you acclimate it slowly when it arrives?
  • Will someone be available to receive and unpack the order promptly?

Compatibility & Stocking • FAQ

Helpful add-ons

Helpful add-ons for the same order