Help! I have had 3 blue gourami for a month now and all three have 3 to 4 times a week of long (3-5cm) white to white with red streak stool. They seem perfectly normal otherwise and eat all types of food and seem to be growing. The only thing I can find is that when angelfish have this, it points to a protozoan infection and the angels act sick. I really could use some advice. Thanks.......