Well, I'm not sure if they make a croaking noise since I don't have the cat like reflexes to net the zippy little bugger! She is a danio after all.
What made me think that it is gas bubble disease is the fact that it doesn't seem to be a fungus. It looks more like a bubble. The more I look and the more I read, however, the more I'm starting to think it is a mouth fungus in its early stages.
I treated the tank with melafix tonight when I got home and will continue to monitor the kids. Hopefully it will all clear up.
What made me think that it is gas bubble disease is the fact that it doesn't seem to be a fungus. It looks more like a bubble. The more I look and the more I read, however, the more I'm starting to think it is a mouth fungus in its early stages.
I treated the tank with melafix tonight when I got home and will continue to monitor the kids. Hopefully it will all clear up.