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.
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Looks to be ball anemone as mentioned. They are photosynthetic and will shrink at lights out as they are not actually an anemone.Well I woke up and it looks dead lol
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.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.
This is 100% correct . I'm not sure where Tony got his information from...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