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Thorny Oyster
Please Note: Due to variations within species, your item may not look identical to the image provided. Approximate size range may also vary between individual specimen.
Thorny Oyster (Spondyllus sp.)
Additional locales and sizes may be available!

Quick Stats

Care Level Expert Only
Temperament Peaceful
Color Form Red, White, Yellow
Diet Filter Feeder
Reef Compatible Yes
Water Conditions 72-78° F, dKH 8-12, pH 8.1-8.4, sg 1.023-1.025
Origin Caribbean, Fiji
Supplements Calcium
Waterflow Medium to Strong
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The Thorny Oyster is a member of the clam family. They are large and sessile with very colorful mantles. The Thorny Oyster's shell is shaped much like a scallop's shell, but the Thorny Oyster remains securely attached to the substrate on the aquarium floor, and does not wander.

The Thorny Oyster is a reef safe invertebrate that is most often kept by the home aquarist as an ornamental element in the aquarium. The shell has many ridges and spines giving the Thorny Oyster an unusual, unique appearance. It is always best to quarantine the Thorny Oyster to be sure that you do not introduce any protozoan diseases they may have. The Thorny Oyster is very sensitive to changes in specific gravity, and requires strong water currents.

The Thorny Oyster is a filter feeder that has its food brought to it on the currents in the aquarium. They should be fed daily with a dissolved, particulate organic substance (like Marine Snow), bacteria and phytoplankton. Provide calcium and alkalinity for best health.

Approximate Purchase Size: Small 1" to 2" Medium 2" to 3" Large 3" to 4" X Large 4" to 5"

Customer Testimonials

Julie Baldwin Coquille , OR
What a cool critter!! I named mine Buster. He sits on the sandbed, in high water flow, as instructed. Adds alot of character. My scooter Blenny hunts next to him stirring up the sand bed, feeding Buster at the same time.
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