[A.M. Aquatics]

I was watching my rilis today, and I spotted 2 little white dot things on its rostrum. I've seen this before on an RCS, and it they seemed to come off withing a day. They kind of look like they are loosely attached. Anyone know what these are? Are they harmful?

 

[GeToChKn]

As long as it doesn't turn into this, I don't think its anything serious.

 

[A.M. Aquatics]

I hope it's not vorticella! If it is, it must be the least form of it. I will do a 15% WC today to get rid of anything that might have caused this.