Any idea what this hitchhiker starfish is??

[Finnys_Reef]

Found this larger than normal starfish in my reef tank today. I have some asterna starfish in there that hitch hiked but this one looks much bigger pretty much the size of a quarter.

 

[Crabs McJones]

Asterina starfish. harmless for the most part, but they can reproduce like crazy and overwhelm a tank quickly

 

[ISpeakForTheSeas]

Yeah, that's a different species of Aquilonastra starfish (known in the hobby as Asterina starfish).

 

[krollins]

Found this larger than normal starfish in my reef tank today. I have some asterna starfish in there that hitch hiked but this one looks much bigger pretty much the size of a quarter.

I wish my asterina starfish looked like that.