it looks like they have broken the thermometer and maybe eaten some of the mecury/glass ,not sure tho, but the female is looking really shy and has a grey patch above her head, not sure what to do, the male has also been harrasing her but nothing to bad just a little chase every now and then, i have divided them , but still unknown what is wrong with them, also just did a 30% water change and dosed with melafix to see if that helps