Seems to be going around. Not sure of the death of my channel catfish "hoover" 2 years old and 26" weighed 10-15 lbs. Soo large and still very young, but I've been losing fish out of this tank like crazy. Phosphates testing high in my tap!!!! Lots of swim bladder issues in my shovelnoses. Looks like my fila will be next. Sorry for your loss.