Need help

[Damian Reyes]

I need help to id this, I have not introduced anything to my tank in a long time. And all the Rock in my tank was dry rock when I put it in over 10 years ago. So I am surprised to see this in my tank.

If you guys can help me, I will greatly appreciate it.

 

[Crabs McJones]

Looks like a bivalve. Likely hitchhiked in on a coral frag

 

[Damian Reyes]

Looks like a bivalve. Likely hitchhiked in on a coral frag

Now the question is, is it good or bad? Not that I have seen it give out any problems for the time being. And who knows how long it has been there and hiding under my blue mushrooms.

 

[Crabs McJones]

good. filter feeder wont harm anything

 

[Damian Reyes]

Awesome! Thank you so much for your help!