Can anyone identify this hitchhiker

[Sam22]

I found this hitchhiker in my tank this morning I’ve taken it out fearing the worse but was wondering if anyone could give me some more info and know if it’s reef safe. I do have a reef safe starfish in the tank I’ll post picture along with the small one I found

 

[vetteguy53081]

Asterina Star and can be a nuisance. I remove what I can with a net or by hand.
They break off a leg as in your pics and it becomes a new star then a population of them. Many will destroy Zoa coral

 

[PTXReef]

Definitely asterina like @vetteguy53081 said! Admired it for a bit, didn’t want to toss it, threw it in a bucket for a couple months, eventually had to toss em because of potential to bother coral. Very cool little guys nevertheless!

 

[MabuyaQ]

Asterina starfish. Great member of your CUC. Numbers will increase initially due to available food, lack of competition and predation. Once your reef gets established, population will go down and selfregulate.
There is a Asterina (lookalike) starfish that will eat zoas but they are less common and will mostly be brought in with zoas directly.