I had three large bass on the shore today being eaten by hawks and vultures two weeks after adding alum possible causes? Not enough to call it a fish kill but all fish over five pounds
The most likely cause was something ewest mentioned...forage! The large bass likely gorged themselves and choked to death due to being able to now see more forage than they could handle. I have this happen now and then when I put feeder fish in my aquarium. The latest victim being a 12" SMB that tried to swallow 7 goldfish at once, and failed. The goldfish got stuck and she was unable to move water across her gills.
