Hundreds of dead fish have been discovered in water deposits and ponds in Brownsville, prompting an investigation by environmental agencies.

Texas wildlife and the Brownsville environmental and health departments conducted test to measure pollutants in the city’s water, and have thus far concluded there are no such chemicals that may be linked to the death of the fish, but may be due to recent changes in climate. Officials say the fauna living in these ponds also known as ‘Resacas’ are used to the lukewarm water temperatures. They hope the deceased fish may serve as food for other species in the area.