I need a little more help. Sorry for the stupid questions. I saw two of my red danio having swollen belly chasing for food and chasing others danios frequently. I have attached some pics. And secondly I have a molly which doesn't seem to have a swollen belly but I can see her gravid spot. She's quite normal in behaviour , no chasing. Attached her pics too. Please let me know what do you guys think and what should I do next? And sorry for the bad quality pics. Thanks again!