Starfish & Urchins
Purple Urchin; I.O. – Pseudoboletia sp.
$29.99
Live animal: Overnight delivery, Tuesday–Friday (Saturday $25 extra, arranged by phone or email). Covered by our Live Arrival Guarantee.We ship daily. Prices and availability may change. Images are for illustration only and may vary from the actual product. Stock is subject to change.
Out of stock
- Packed to order with heat or cold packs for the season
- Eating and settled in our systems before it ships
- Questions? Ask a reef keeper
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About this invertebrate
About this invertebrate
Purple Urchin; I.O. – Pseudoboletia sp. is a saltwater sea urchin for reef aquariums, sold under the shop name with the genus Pseudoboletia sp. It’s typically used as an algae grazer/detritus feeder and as a hardy, interesting cleanup-corner invertebrate when kept in a stable marine system. In practice, it’s best for tanks that already have mature live rock and can support an urchin’s grazing habits without rapid fluctuations in water quality.
Features:
- Helps with algae and biofilm grazing as it moves across rocks and established surfaces.
- A scavenging/detritus-leaning feeder that can benefit from routine maintenance of the aquarium’s food availability.
- Makes good use of live rock for shelter and foraging; provide plenty of textured surfaces.
- Generally non-aggressive toward most tankmates, though it may compete for space in tight aquascapes.
- Best kept in a stable, established saltwater tank to reduce stress.
- Can be a long-term addition; plan for ongoing grazing demand as the system matures.
Specifications:
- Identity: Invertebrate: sea urchin, Pseudoboletia sp. (as listed: “Purple Urchin; I.O.”)
- Care level: General marine invertebrate care; prefers stable water quality in an established reef system
- Temperament: Typically peaceful with other reef fish; allow adequate space
- Diet (general): Algae/biofilm and detritus; often benefits from supplemental algae/seaweed foods when needed
- Placement: Rockwork and near substrate where it can forage and find shelter
- Light: No special lighting requirements beyond normal aquarium lighting for the tank
- Temperature (general reef range): About 72–78°F (22–26°C)
- Salinity (general reef range): About 1.023–1.026 specific gravity
- pH (general reef range): About 8.1–8.4
- Water stability: Avoid rapid swings in salinity, temperature, or pH for best health





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