Philly, if you have anything that can serve as a QT I would get that "spotted" platy out of your main tank NOW. Just in case it is something contagious or communicable.
I suspect though that you are on the right track with the observation about the eaters-of-gravel. These might have eaten something small enough not to kill them immediately but big enough to cause a blockage further down the intestinal tract.
Of course my medical qualifications for diagnosing peculiar diseases come from obsessive watching of "House."
I suspect though that you are on the right track with the observation about the eaters-of-gravel. These might have eaten something small enough not to kill them immediately but big enough to cause a blockage further down the intestinal tract.
Of course my medical qualifications for diagnosing peculiar diseases come from obsessive watching of "House."