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Pincushion urchin
Fish and Inverts
Pincushion urchin
$7.00
The pincushion urchin (Lytechinus or Tripneustes species) is a round, spiky marine invertebrate popular in saltwater aquariums for eating nuisance algae.
- Diet: Voracious herbivore that eats hair algae, film algae, and macroalgae.
- Size: Grows to about 2 to 4 inches in diameter.
- Behavior: Famous for “covering” itself by lifting bits of shell, rubble, algae, or loose coral frags onto its back as a hat for camouflage or sun protection.
- Reef Safe: Generally yes, but they can act like tiny bulldozers and knock over unglued coral frags.
Aquarium Care
- Tank Size: Minimum of 20 to 30 gallons.
- Water Temperature: 72°F to 78°F
- Salinity / Specific Gravity: 1.023 to 1.025
- pH Level: 8.1 to 8.4
- Acclimation: Sensitive to changes in water chemistry; requires a slow drip acclimation of 60 to 90 minutes.
Availability: 4 in stock
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