Pregnant or fat?

James
James Member Posts: 26
Hi guys,
this probably doesn't need to go into the emergency room but still. I have a pair of giant danios, when I got them they where small and usual sizes but then it got colder and now the girl (I think) is fat, she also has a small black dot down the rear end of her body. I have moved her and the other one into a private tank. Is this normal?

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