Ok what is it

[cypike]

Showed up out of no where, probably the size of an eraser head on a pencil, I have snails and a clown fish and a goby and a pipe fish and a tuxedo urchin in here. Any ideas what this could be? I haven’t added anything to this tank for quite a while.

 

[EeyoreIsMySpiritAnimal]

Looks to be some sort of anemone

 

[cypike]

But what type

 

[ScubaSnacks]

Looks like a ball anemone.

Is this a Glass Ball Anemone? How to control?

I just noticed four of these tonight. They're transparent, and a pretty bluish-green, with white spots, and white balls on the tips of the tentacles. The photo is of one about 1/2" in diameter. I have one that's 1/4" and two that are closer to 1". They are all at the base of my live rock...

www.reef2reef.com

 

[Arthacker87]

Ball or glass nem. Pretty common

 

[Fish_are_stoopid]

Agree on ball. Common

 

[EeyoreIsMySpiritAnimal]

Not a ball.
And "glass anemone" is another name for aiptasia.
Without any other photos, I suspect it's aiptasia and would recommend removing/killing it.

 

[cypike]

Well I woke up and it looks dead lol

 

[vetteguy53081]

Well I woke up and it looks dead lol

Looks to be ball anemone as mentioned. They are photosynthetic and will shrink at lights out as they are not actually an anemone.
They remain small and here is a puzzling fact as others stated they are a good anemone. Anemone ???
Ball Anemones are actually a mushroom coral that is commonly confused too many as a Majano Aiptasia. Unlike an Aiptasia, they are reef safe, they commonly stay open during the day and closed up at night. The tips if its anemone-like tentacles end with a ball tip giving it its' name
If truly dead, scrape off into a net with edge of a credit card

 

[ISpeakForTheSeas]

Not a ball.
And "glass anemone" is another name for aiptasia.
Without any other photos, I suspect it's aiptasia and would recommend removing/killing it.

Agreed that this doesn't seem to be a ball anemone - it doesn't have appear to have the tell-tale, ball-shaped tentacle tips.

It likely was a "pest" kind of anemone, so it dying off may not be a bad thing for your tank.

 

[ScubaSnacks]

What about a early polyp stage jelly?

 

[OrionN]

Ball anemone has a ball at the end of each tentacles, of different color. They are not photosynthetic and only come out at night.
Not my picture but got it from the NET

 

[EeyoreIsMySpiritAnimal]

Ball anemone has a ball at the end of each tentacles, of different color. They are not photosynthetic and only come out at night.
Not my picture but got it from the NET

This is 100% correct . I'm not sure where Tony got his information from...