Good or bad starfish?

[jcosta26]

 

[CodyRVA]

following.

 

[Lionfish Lair]

There's no way to tell.

 

[kevindo123]

They are not bad but can over populate if you let them. I suggest taking them out as they eat the coralline algae in your tank.

 

[Toakhuynh]

someone told me this can eat your Zoa, and some soft coral.

 

[WetWhistle]

It really depends on what species you have. Most are harmless and beneficial. Others will eat your coral. I would keep an eye on them and remove if they are causing an issue. If they are not I would leave them as since they are on a rock and not a coral they are most likely harmless.

 

[Lionfish Lair]

There have been reports of it, but little in the way of actual proof.... so there's a lot of debate back and forth about that. People will debate it until there is more actual evidence of it. Thing is, there are a bunch of different species of asterina, so I doubt they all act the same, especially under these artificial conditions. I don't care for them personally and will remove them as I see them on the glass or rock. My rock looked like it had chicken pox when they left all these white spots on the coralline.

 

[Lionfish Lair]

It really depends on what species you have. Most are harmless and beneficial. Others will eat your coral.

I type too slow... I change my answer to a +1 LOL.

 

[Elysium]

I have similar looking ones with the red coloring on the back, and they love to eat zoas. I take out every one I see.

 

[WetWhistle]

I have had them for decades in huge quantities and I have never had a issue. Mind you I have the white ones and not the red color ones like Elysium.