Aiptasia?

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TheEngineer

TheEngineer

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i recently noticed a few of these on my glass. Upon closer inspection, my rocks are covered in them. I hope they aren't aiptasia.

Ideas?
 
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BRS
I thought hydroid was possible too. Just hadn't seen them this large before. I'm used to the ones that look like mini, clear sunflowers.
 
There's new stuff coming into this hobby everyday, good stuff like corals and fish but also the bad stuff.
We only know a fraction from what is out there in the ocean.

Let's see what @Lionfish Lair can tell us.
 
Back again, but this time with video! :)

This morning I was filling my top off container before lights up. Just a bit of early morning light coming in and I noticed a bunch of long tentacles. I looked closer and they were everywhere.

These are all over and possibly where I'm seeing all of the other hydroid-like guys. Aiptasia?

 
Top Shelf Aquatics
I'm not used to aiptasia hiding during the day though. That's got me confused.
 
@Lionfish Lair what do you think? Pics I've seen of hydroids have 9 tentacles. These guys have 14 (or 13 if I double counted one, ha!)
 
The tentacle number won't mean anything (and you were right, there was 14 :-))

So, in the daytime they disappear? They don't have any zooxanthellae that I can see, so it's not photosynthetic.... they points towards hydroids as well.

This is a tough one. Lemme chew on it a bit and watch the videos a few more times. They are not sounding like aiptasia, despite looking so much like them.
 
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Lionfish Lair said:
The tentacle number won't mean anything (and you were right, there was 14 :))

So, in the daytime they disappear? They don't have any zooxanthellae that I can see, so it's not photosynthetic.... they points towards hydroids as well.

This is a tough one. Lemme chew on it a bit and watch the videos a few more times. They are not sounding like aiptasia, despite looking so much like them.
Click to expand...
I may have both I suppose. I have a TON of somethings all over and you can see them during the day. In addition, as I saw this morning those somethings (or at least a subset of them) seem to get significantly larger when it is dark in the tank.
 
Top Shelf Aquatics
Took another video... As you can see, they're pretty densely colonized. They're all over my tank. They all look the same to me and close up like that I would say aiptasia before I said hydroid. But that doesn't make my instinct right :)

 
AS
That's crazy. I'm going to read around to see what I can find. This isn't "normal" presentation of either, so I may not be correct... just so you know.
 
Deltec
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