Hello- Help! I've had one of my Blue Rams for about a year now and he's always been quite healthy. A couple days ago though, he just started swimming vertically. He pretty much just stays in one spot and swims upward. He's breathing heavily, but there are no other visible symptoms (color is normal, no torn fins). The water parameters are nominal and all the other fish in my 36 gallon tank (including several Blue Rams) are doing just fine. Do you have any idea what's going on? Thank you!