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Old 05-20-2011, 12:55 AM   #1
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Unknown black thing with Thorns??

Best i can explain this is, its black with brown/pink looking thorns poking out of it! I don't know what it is, but its moving around on my live rock, i thought it just stayed in one place, but it was completely gone when i left earlier and i just got back in and it's back in the same spot.

Can anyone I.D. this, i cannot find anything to help me out on figuring out what it is.

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Old 05-20-2011, 02:18 AM   #2
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I'm sure its some kind of urchin, just not sure which kind.
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Old 05-20-2011, 08:52 AM   #3
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Urchins eat a LOT of algae...they are one of the best algae eaters ya can get...free is even better :P
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Old 05-20-2011, 10:56 AM   #4
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Quote:
Originally Posted by puffballurchin
Urchins eat a LOT of algae...they are one of the best algae eaters ya can get...free is even better :P
+1, urchins can wipe out algae, but if your tank is acrylic they can scratch it. If it is glass then no worries, great CUC addition for free.
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Old 05-20-2011, 11:03 AM   #5
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how come i never get any cool hitch hikers like that! lol
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Old 05-20-2011, 11:05 AM   #6
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I know! They are always pests....
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Old 05-20-2011, 12:01 PM   #7
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So its a good thing to have one im guessing hahah. I just went dowstairs to my aquarium to check on it and its gone again, but i guess ill leave it in there. I have no idea which rock he caught a ride on.

i have a glass tank, but making sure... is it safe to be around my peppermint shrimp and clown fish or any other small fish?
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Old 05-20-2011, 12:04 PM   #8
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Yes they are safe, it is just going to be a janitor for you.
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Old 05-20-2011, 12:10 PM   #9
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Ok thanks everyone.
How sharp are its thorns? Because im still aquascaping and i dont want it to stab me and put a hole in my gloves while it hides. Because once i get alot of the base rock from reefcleaners, im going to move alot of rocks. That small urchin hides just as good as my pepermint so i cant find them when the lights on.
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Old 05-20-2011, 12:36 PM   #10
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Very cool find, but it really depends on the urchin and what type of algae. I've had 5 types of urchins and none of them really did much for algae removal.

If it is a black spiny like it looks like it may be, prepare for it to get big FAST. I really liked mine, but it quickly outgrew my 38G. and after being stung by it once, I brought it back to my LFS.
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