On June 10, 2025, neighbors of Colinas de San Miguel and the Capital Norte subdivision in Zapopan discovered thousands of dead fish lining several kilometers of the Río Blanco’s banks. The sight of mostly mojarra swept ashore painted a stark picture of ecological distress in what was once one of the region’s cleanest streams.
This incident follows a similar mass fish kill near Ajijic on Lake Chapala just days earlier, marking the second major aquatic die-off recorded in Jalisco within ten days. Both events have heightened worries over water contamination and public health . . .






