Dead fish are surfacing in the Concho River and washing ashore close to Miles on the Runnels/ Tom Green County line.

Thousands of fish are dying and Texas Parks and Wildlife officials are trying to figure out why.

The corpses of bass, carp, perch and catfish have all been found along the river bank near Mullins Crossing and about four miles south of HWY 67 in Tom Green County. Area residents first spotted the washed up fish over the weekend, with even more turning up on Monday.

One long-time resident we spoke to wonders whether it’s a harmful algae that’s to blame for the death of the fish.

Although it’s still unclear what killed the fish, the Inland Fisheries Division, a department with Texas Parks and Wildlife, went to the area and took a water sample that will be sent off for testing.