Picture of the Week, Thorny Oyster

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Thorny Oyster

We decided to focus on the weird and unusual with our latest AquaNerd Picture of the Week. Our subject is the thorny oyster (Spondyllus sp.), and as you can probably tell, that name is very fitting to some extent. Where the name is wrong is the oyster part. The thorny oyster is actually a clam, but it doesn’t use photosynthesis like the far more popular Tridacnid clams. Instead, it is a filter feeder that requires heaving feedings of plankton based products. Additionally, the thorny oyster can be quite difficult to care for, making it a not so common find in the aquarium trade.

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  • That is cool. I never knew they were a clam. Knew they required tons of plankton and were fragile and left it at that. Thanks for sharing.

    “the thorny oyster can be quite difficult to care for, making it a not so common find in the aquarium trade.” This is a very good thing and I wish there were more animals like this. There are too many animals that are common in the hobby that are very difficult to keep.

  • Mike Tuccinardi

    Just realized this exact oyster is now in my tank. It was at MACNA and has a red/green rock flower anemone on it. One of my favorite inverts!