Well yesterday morning I found it dead on my QT tank. It was swimming just fine a few hires before. The only think I have thought of is I drilled the acrylic and I was very careful not to have any plastic shaving go omin the tank but maybe one got it, ate it and it caused a blockage. Because the fish looked fine just stopped eating. I looked at it close when I took it out it did not see any think on his gills and he was not bloated. It bothers me loosing a fish but I can say I did everything possible to help him.