Never seen this before, anyone know what it is?

[Castillo]

This little mini torch loking thing appeared at the bottom of my toad stool out of nowhere and I don’t know what it is. I want to let it grow because it looks kinda nice, but I want to see if it’s a good thing or if I should get rid of it.

 

[PR_nano]

Video is not playing but search ball anemone and see if it resembles it when open.

 

[anemonalex]

Or majano, at least it's not aptasia.

 

[Mr_Knightley]

Certainly looks like a ball corallimorph, but it's tough to tell when it's closed. certainly not an aiptasia or majano based on the foot color.

 

[Castillo]

Certainly looks like a ball corallimorph, but it's tough to tell when it's closed. certainly not an aiptasia or majano based on the foot color.

 

[jabberwock]

I like it! You should keep it. I don't know what it is...

 

[Mr_Knightley]

Certainly looks like a ball morph, nice find! They are some of my favorites. They like to stay in the shade and will usually survive off of just leftover food, but you can also target feed it if you want to.

 

[Castillo]

Video is not playing but search ball anemone and see if it resembles it when open.

I think this might be it

 

[Castillo]

I like it! You should keep it. I don't know what it is...

Yeah I like it too, I want to make sure it’s okay for me to keep it haha

 

[Mogwai]

This little mini torch loking thing appeared at the bottom of my toad stool out of nowhere and I don’t know what it is. I want to let it grow because it looks kinda nice, but I want to see if it’s a good thing or if I should get rid of it.

Definitely looks like a Majano anemone to me. My uncle has a few of them in his tank and he's clueless as to how they got there. Lol

 

[ISpeakForTheSeas]

Just to add, OP, this is definitely a corallimorph (A.K.A. Ball anemone) - most are harmless (they're related to soft mushroom corals); some may reproduce quickly, but it's rarely an issue.