My first display tank seems to be showing signs of ich but I’m not sure. It’s a 240 and if it is ich I don’t know where to go with all my fish. Right now only 2 neon cleaner gobies are showing any signs. I have a Sailfin tang that I assumed would be the first fish to show signs if anything went wrong, and it appears clean. Any confirmation of it being ich (or not) would be appreciated, as well as ideas of what to do with all my fish if it is. I don’t have another tank suitable to hold them all for treatment, and don’t have the space to set up multiple treatment tanks. Thank you for your help!
Might be hard to see in the photos with the bubbles in the way.

Might be hard to see in the photos with the bubbles in the way.

