description Stylocidaris reini Overview
Stylocidaris reini is a cidaroid sea urchin, commonly grouped with the pencil-spined urchins of the family Cidaridae. It is distinguished by a compact test and stout primary spines that carry surface ornamentation, features used by specialists when comparing cidaroid specimens. Records place the species in the Indo-Pacific, where it is associated with hard-bottom marine environments and is of interest in invertebrate taxonomy and echinoid identification.
help Stylocidaris reini FAQ
What is Stylocidaris reini?
Stylocidaris reini is a cidaroid sea urchin in the family Cidaridae. It is recognized by stout primary spines covered with conspicuous small spinules arranged along ridges.
Where does Stylocidaris reini live?
Records place it in the Indo-Pacific, including waters from Japan toward northern Australia. It is associated with deeper marine bottoms, with some references giving a broad range around 100 to 700 meters.
How large is the test of Stylocidaris reini?
A commonly reported test diameter is around 4 to 6 centimeters, although individual specimens vary. Photographic records from Bohol, Philippines, show the ornamented primary spines clearly.
What does Stylocidaris reini eat?
Available species descriptions characterize it as an opportunistic bottom feeder that can consume algal material and animal remains. That diet fits a deep-seafloor cidaroid better than a specialized coral-grazing urchin.
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