Are my zebra danios pregnant?
You have asked this question in the “birds” section. You might get more answers in the “fish” section. Zebra danios don’t get pregnant they are egg layers. They ideally need a tank temperature of 18-24 degrees so I’m not sure why you are keeping them with coldwater species like common goldfish which are coldwater fish? Yours sound as though they are sick I’m afraid, bulging doesn’t sound good at all.
