First time seeing this - what is it ?

[Hallowhead]

Howdy,

First time ever seeing this.. what is it ?

 

[shandoee]

Asterina starfish

 

[Hallowhead]

Asterina starfish

Good or bad ?

 

[tehmadreefer]

Good or bad ?

could go either way, it depends on the species and unfortunately there’s no easy way to tell between the ok and the bad. Regardless, if you have one it’s only a matter of time when you may have hundreds.

 

[DeniseAndy]

Mine have never been a huge issue, but I still pull them when I do changes and such. They can multiply from a tiny part of themselves.