What is this small squid jelly looking thing?

[aof282537]

Quick question guys what is this squid jelly fish looking thing is? It it harmful to my reef tank?

 

[krollins]

Could you catch it, put it in a small bowl or glass, and then take a picture.

 

[aof282537]

I’ll try, right now I can’t see it anymore hope it not harmful

 

[DaJMasta]

Looks like an aiptasia to me, but better pics will help.