Today i bought a male blue paradise gourami to put with my female. I just bought the male today and put him in like 2 hours ago. I noticed that male has become a very dark colored wile the female is still a light color. both of them are starting to act wierd. It seems like they attack each other occasionally but I'm not sure. They seem to get next to each other facing opposite directions and then flare up and start to shake. I'm not sure what's going on? Some advice would be greatly appreciated.