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Old 10/20/2017, 11:32 PM   #1
Killer bunny
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Hoping someone knows what this is...

I recently brought home a Banngai cardinal and the next day I saw two of these in the quarantine tank. I've called a few LFS's, searched on the internet and nothing I've found so far looks like this. Not wanting to take any chances, I removed them from the tank. One end was anchored (in this case 1 was on the sponge filter sponge and the other was attached to a pvc pipe), the other end has this white fuzzy part on it. 99.9 % sure they weren't there before bringing the fish home, but unless they grow extremely quickly, I can't believe I would have missed seeing them on the fish or in the bag. Fish was drip acclimated, and bag water was poured into a net when I placed it in the tank. Fish looks healthy, and is eating pretty well. Tank is kept at a salinity of 1.026 and about 78 degrees. Recently tested with NO3 ~ 7, PO4 0.05, no NH3 or NO2, not that I think water parameters likely has anything to do with it. The quarantine tank has only ever had fish in it, the last of which was in it about 3 weeks ago, before going in to the display tank. Both fish that were in there previously are also doing well. Does anyone have any idea what this is, and more importantly, do I need to be concerned?


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Old 10/20/2017, 11:35 PM   #2
Tripod1404
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Probably parasitic isopods.


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Old 10/20/2017, 11:39 PM   #3
Killer bunny
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Hoping someone knows what this is...

I should also mention that the body was pretty soft and worm-like.


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Old 10/20/2017, 11:45 PM   #4
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Looked up parasitic isopods - hard to tell if that's what I had - they look pretty nasty - any idea of how they are treated?


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Old 10/20/2017, 11:55 PM   #5
RedGabino
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They área good for your system.
Pineapple filters.

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Old 10/21/2017, 12:27 AM   #6
Killer bunny
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Thanks, RedGabino, every time I google pineapple filter I get hits for canned pineapple - do you know of any other names?


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Old 10/21/2017, 01:11 AM   #7
RedGabino
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Originally Posted by Killer bunny View Post
Thanks, RedGabino, every time I google pineapple filter I get hits for canned pineapple - do you know of any other names?
Google pineapple filters Reef Aquaris


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Old 10/21/2017, 01:13 AM   #8
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Google pineapple filters Reef Aquaris


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Ir pineapple sponge Reef Aquaris


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Old 10/21/2017, 07:37 AM   #9
mcgyvr
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Its a pineapple sponge.. Totally harmless and very common in new tanks..

And here is a link you should browse to see many of the common "creatures",etc.. that pop up in saltwater tanks and it lets you know if they are good or not..
https://www.lionfishlair.com/hitchhikers-guide/

And Hello from a former Lake County Resident (Lake Zurich)...


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Old 10/21/2017, 09:46 AM   #10
Killer bunny
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Thank you mcgyvr - that link was awesome.


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Old 10/21/2017, 09:51 AM   #11
Killer bunny
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Thanks everyone - I'm relieved to know they were pineapple filters - aka sycon sponges, aka pineapple sponges - next time, I'll leave em alone.


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Old 10/21/2017, 09:53 AM   #12
Killer bunny
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mcgyvr - just saw you are from Lake County and now live in North Carolina - I also have given a lot of thought to moving there - for now just have to be jealous


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Old 10/21/2017, 02:37 PM   #13
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Yep. Those sponges are harmless and quite cute, frankly!


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