Is this aiptasia? ID

[starypotter]

Hi everyone,
I made the mistake of not checking my ulva before I put some in my tank. I've already pulled out an aiptasia and when I moved a clump of ulva away from my rock where it had all been gathering I spotted this.
When returning to try to get a bigger picture I noticed 3 more as well but they're all smaller and hidden in the rock so I'm going to guess this is a giant aiptasia?
It's fairly large, a solid quarter-half of an inch in diameter at the base I'd guess and there's stripes going down the side.

 

[JaimeAdams]

The black base is throwing me off, but doesn't look good.

 

[Flexin]

Get some gel crazy glue and seal it in...

 

[Tom Blevins]

 

[starypotter]

The black base is throwing me off, but doesn't look good.

That was my thought! There was one on the ulva itself, no doubt it was aiptasia so I just plucked it out, but this one is different. The base is soft and that stripe I could have swore it seemed blue for a second when I was looking at it. They are all unfortunately on the two base structures of rock so I'm not so sure how I could go about getting it out, but the rock with the monster one does have a monster worm in it two so two birds...

 

[starypotter]

Get some gel crazy glue and seal it in...

That would take a whole lot of crazy glue, it's just sitting on the rock, not in a hole or anything, and the mouth? head? part opens up fairly large.

 

[starypotter]

That looks like it's got a rigid base? I poked and squished this one around with my handy poking and squishing stick.

 

[Amoo]

Looks like a tube anemone

 

[Tom Blevins]

I was thinking a baby, your pic seems to have way more feelers than aiptasia
and closes up different than aiptasia to me anyways.

 

[starypotter]

I was thinking a baby, your pic seems to have way more feelers than aiptasia
and closes up different than aiptasia to me anyways.

When I was poking around at it it did close up even more than that as well, not quite 100% sealed off but I don't doubt it would have gotten to that point. Also a baby what, what is it in your first picture? Tube anemone like @Amoo says?

 

[starypotter]

Looks like a tube anemone

I see that there's at least one variety on sale at Live Aquaria so I'm guessing it's not a kill it with fire sort if that's the case?

 

[Tom Blevins]

baby tube yes

 

[JaimeAdams]

You know @Tom Blevins may have hit the nail on the head.

@starypotter tube anemones can release out of their tubes.

 

[Amoo]

I see that there's at least one variety on sale at Live Aquaria so I'm guessing it's not a kill it with fire sort if that's the case?

I would read extensively about it and make a decision based on that. They get very large and can act like a venus fish trap.

 

[starypotter]

I would read extensively about it and make a decision based on that. They get very large and can act like a venus fish trap.

I'll read up on it in class later. I like small fish so it sounds like it may be a remove and rehome sort of deal then.

 

[starypotter]

So I went through as much of the ulva in the tank that I could and found several other anemones. These anemones close up almost like a zoa, and they look a lot like a zoa when they're closed up, just a little ball of jelly but they open back up very quickly. I poked one and got it to close up completely, no tentacles sticking out at all, then by time I took the picture it was already like this. And then I watched the one I poked open up and eat a pod I think. I have a video I'm uploading now.

 

[starypotter]

This is real time speed of the anemone opening up after it was fully closed. The anemone seems to grab and eat a pod around the 50 second mark.

 

[starypotter]

So there's a minimum of 4 in my tank right now, I've plucked another half dozen off of my ulva and with that many I'd bet there's more. All of the ones on my rock are on the bottom rocks in hard to reach areas. How do you propose I get rid of them? I watched my peppermint shrimp just mosey on by without a care in the world and the one is already larger than the shrimp is so I can't count on him eating them.
Any advice on how I could be getting these out of my tank? If I were to dip the rock in some fresh water do you think they'd hop off?

 

[starypotter]

I found what it is, it's a Striped Sea Anemone or Diadumene lineata. Still not thinking that's a good thing. They can reproduce sexually or asexually and are apparently an extremely tolerant species so not exactly sure how I'm going to go about removing them. There's not much on them in tanks, I'm guessing because other people were smart enough to remember to check their ulva before dumping it in their tank straight from the ocean. They're even found in brackish water so I'm thinking a freshwater dip wouldn't be too effective and would just do more damage to my rock than anything.

 

[Amoo]

A kalk paste or slurry will usually take out almost anything. I'd start there.