Help with critter ID

[ssmvunderthesea]

Hi everyone! I’ve had a 90 gallon tank for about a year now and spotted this guy for the first time ever. What is this lil guy and is it anything to worry about? Thanks!

 

[Palyzoa]

Asterina starfish

 

[kirstyflash]

Asterina starfish

+1
Have never had them but hear they reproduce fast by splitting so if you have one, you have many

 

[Palyzoa]

Nothing to worry about. Very common and the population will rise or fall as your aquarium progresses

 

[Muttley000]

I see one every few months in my 500 gallon multitank system, never an issue here.