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05/18/2020, 06:18 PM
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#1 |
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Registered Member
Join Date: May 2016
Posts: 30
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Baby urchin? What is this?
Hey guys!
Anyone know what this is? It rode in on a coral frag... Trying to determine if it's a friend or foe. Thanks!  Sent from my SM-N975U using Tapatalk |
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05/18/2020, 06:21 PM
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#2 |
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RC Mod
 
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Doesn't look foe-ish. Might be a sea squirt or tunicate. They don't live long in our nutrient poor tanks. They don't move much. If it moves, it's probably not that.
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Sk8r Salinity 1.024-6; alkalinity 8.3-9.3 on KH scale; calcium 420; magnesium 1300, temp 78-80, nitrate .2. Ammonia 0. No filters: lps tank. Alk and cal won't rise if mg is low. Current Tank Info: 105g AquaVim wedge, yellow tang, sailfin blenny,royal gramma, ocellaris clown pair, yellow watchman, 100 microceriths, 25 tiny hermits, a 4" conch, 1" nassarius, recovering from 2 year hiatus with daily water change of 10%. |
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05/18/2020, 06:24 PM
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#3 | |
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Registered Member
Join Date: May 2016
Posts: 30
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Quote:
I just did a quick Google for Sea squirts and tunicates and it doesn't appear to look like them! I'll try to take more pictures when I get home tonight, but it has little pins that stick out from it, that's why I thought it was maybe urchin related but I'm a noob haha. Thanks! Sent from my SM-N975U using Tapatalk |
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05/18/2020, 07:22 PM
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#4 |
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Cloning Around
 
Join Date: Jun 2000
Location: Valencia, California
Posts: 25,267
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Some ball sponges have "spikes' that project outward like that. Does it move?
Kevin
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Back in the pool, swimming with the sharks... Current Tank Info: Red Sea 425XL w/Kessil AP700, Vertex 180i Skimmer, 2 x Vortech MP40s |
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05/18/2020, 08:04 PM
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#5 | |
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Registered Member
Join Date: May 2016
Posts: 30
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Quote:
Sent from my SM-N975U using Tapatalk |
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05/22/2020, 04:41 AM
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#6 |
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Registered Member
 
Join Date: Apr 2008
Location: Grove City, Ohio
Posts: 10,806
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I'm gonna vote for a sponge of some sort (assuming it's still there!)
If it were a baby urchin it would look just like a larger one, just TINY! About 20 years ago I brought home a small coral from the LFS. I noticed what appeared to be a very small urchin on it - about BB sized. I've had it ever since. It is now nearly softball sized and happily comes out at night and scours my rocks of algae (both green and coraline). Its easy to follow it's path - there is a wide super clean section here or there. Probably the best freebie hitchhiker ever.
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I'll try to be nice if you try to be smarter! I can't help that I grow older, but you can't make me grow up! Current Tank Info: 120 mixed reef with 40b sump, RO 150 skimmer, AI Sol Blue x 2, and a 60g Frag Tank with 100g rubbermaid sump. 2 x Kessil A360w lights, BM curve 5 skimmer |
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