I have 3 green chromis in a 29 gal
tank that has been cycled for about a month. The fish are eating great and actually seem hungry all the time. I noticed last week that right after I turn the lights on, one fish had some dark spots on it. I figured it was nothing since I know most fish have color differences after the lights have been off and the chromis seem to change color any way.
Anyway, I threw some crabs in the tank today after getting some new LR
and noticed that the one fish had something attached to it. It looked like an air bubble string. It has since dropped off though but this fish is the only one with the dark spots. The fish have been in the tank almost 3 weeks and I was getting ready to move them to the 75 gal
tank I have set up.
I was wonder if this might be some kind of infection and if I should treat the tank? I don't have any meds right now and was wondering what I should use if any?