Need help identifying starfish

[mopar_1974]

Can I get an id on this starfish? It's about the size of a quarter. Randomly appeared after 5 years. Breaking down the tank and moving to another one. Unsure if I should move it or get rid of it.

 

[Slocke]

Looks like a true asterina. I don’t like them but many do

 

[mopar_1974]

That was my thought at first. I've had asterina but they've been much smaller. This was just one big one about the size of a quarter. Could be a different species of asterina I guess?

 

[Slocke]

That was my thought at first. I've had asterina but they've been much smaller. This was just one big one about the size of a quarter. Could be a different species of asterina I guess?

The small ones aren’t asterina. They are technically aquillinastra