Gas bubbles in fins

[LobsterOfJustice]

I just came back from vacation and it seems my ATO was not functional, or barely functional, for most of a week. The return pump has been sucking air and spitting micro bubbles into the tank for several days. A tang is dead and some other fish (angelfish, anthias) seem to have gas bubbles in their fins. I believe I heard this was a possibility from gas supersaturated water but have never dealt with this (honestly wasn't sure it was a real thing). I have stopped the source of microbubbles but is there anything else I can do? Does anyone have experience with this?


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[HumbleFish]

Not much you can do except eliminate the excess dissolved gas and hope the issue self-corrects.

Read this: https://www.advancedaquarist.com/2014/8/fish