Author Topic: multiple sea urchins  (Read 2456 times)

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Offline btrue

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multiple sea urchins
« on: August 08, 2007, 07:31:08 PM »
I have a long spine sea urchin ;D, and would like to get a few more different kinds of sea urchins. The internet says that they are peaceful, but will they live together in a 29 gallon aquarium?

Offline Rico

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Re: multiple sea urchins
« Reply #1 on: August 08, 2007, 09:24:42 PM »
Not sure about mixing, but it should be okay.  I would use a bit of caution with these guys.  While they are often purchased to control hair algae, they also can get quite large, up to 8".  That would be a bit much in a 29.  They also can be bulldozers in the tank, rearranging rock and corals as they feed.  The smaller tuxedo and pincusion urchins may work better.  All of them will eat your corraline algae as well.

Rick Berg
240 Gal Acrylic IAP tank
Propagating SPS Corals

Offline Robert M.

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Re: multiple sea urchins
« Reply #2 on: August 12, 2007, 09:54:10 PM »
I have 4 urchins together without problems. One is a black long spine, one is a pincushion and two came from Florida which are probably pincushion as well. The pincushions can easily move anything as big as themselves that is not glued down.
58 Gallon Oceanic Reef-Ready