Orange Spine Sea Urchin Tripneustes Gratilla

£29.99

SKU: STF-MARINE-MISSING-CRITTERS-228 Category:

Description

Orange Spine Sea Urchin – Tripneustes gratilla

Overview:
The Orange Spine Sea Urchin, also called the Collector Urchin, is a medium-to-large echinoderm known for its short, dense spines tipped in bright orange. It’s highly effective at algae control and is widely used in reef tanks as part of a clean-up crew.

Origin:
Native to the Indo-Pacific, including the Philippines, Fiji, Hawaii, and the Great Barrier Reef, where it grazes on seagrass beds, rubble zones, and reef flats.


Feeding:

  • Primarily an herbivore, grazing on film algae, macroalgae, and coralline algae.

  • May accept dried seaweed (nori), spirulina, and sinking algae wafers when natural food is low.


Tank Mates:

  • Reef-safe, does not eat corals.

  • Avoid predatory species like triggerfish, puffers, and large wrasses, which may nip at or eat urchins.


Aggression Level:
Peaceful. Non-aggressive, though it may accidentally dislodge small frags or unsecured rockwork while grazing.


Experience Level:
Intermediate. Hardy but requires a mature tank with established algae growth. Needs careful acclimation to avoid stress from salinity or pH shifts.


Water Parameters:

  • Temperature: 74–80°F (23–27°C)

  • pH: 8.1–8.4

  • Salinity: 1.023–1.025

  • Tank Size: 50+ gallons


Unique Features:

  • Dense, short spines tipped with orange give it a striking appearance.

  • Like other collector urchins, it may carry shells, rubble, or algae on its back for camouflage.

  • Plays a key role as an algae controller in reef aquariums.


✨ The Orange Spine Sea Urchin is a vibrant, hardy algae grazer and an excellent addition to well-established reef tanks, provided the aquarium is large enough and rockwork is secure.

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All sizes listed on our website are approximate, as livestock is seasonal and naturally variable