What is this on my glass?

[DonJuanAntwon]

Hey everyone, new to the hobby. What is this on my glass? I only see one of them. Flatworm? Or something else. Thanks!

 

[Carabeo]

Looks like half a starfish, enough to regrow into a whole little starfish. Check out asternia pics and see what you think. "Asterina stars reproduce by fragmentation (fissiparous reproduction) and their bodies will split apart losing one or two legs at a time which regrow as new starfish"

 

[MoshJosh]

Asterina starfish

 

[ying yang]

+1 on asterina starfish

 

[Rick's Reviews]

Looks like this guy but with less legs

 

[Rick's Reviews]

Asterina

 

[DonJuanAntwon]

Looks like half a starfish, enough to regrow into a whole little starfish. Check out asternia pics and see what you think. "Asterina stars reproduce by fragmentation (fissiparous reproduction) and their bodies will split apart losing one or two legs at a time which regrow as new starfish"

That’s what I thought it looked like too. Some type of starfish. Did this guy hitch a ride in on a coral or something? Also should I be worried about my corals with this guy? I’m deciding if I should let him be or get him out. What are your thoughts?

 

[Rick's Reviews]

It's Your aquarium! , they are very controversial, some love em, some hate them, they have benefits and also negative effects, I decided not to introduce

 

[Reefer Matt]

Some asterina are beneficial at removing algae. Some eat zoanthids. I usually pluck them out, but nothing to be worried about.

 

[Jeffcb]

Were there is 1 there is 2... soon many more . I had a few that turned to hundreds now not many. Harlequin Shrimp love them.