A polluted river in Mexico may be scrambling the love lives of two small fish species — so much so that it may be erasing the line between them. Downstream of the town of Calnali, in central Mexico, ...

The byproducts of modern society appear to be messing with the love life of two tiny fish species that have long coexisted in Mexican rivers. A Stanford-led study found that the two swordtail fish ...

Aquaculture—the farming of fish and other aquatic organisms—is the world's fastest-growing food production system. The sharpest growth in aquaculture is happening in Africa. Average annual growth ...

The theory that water-breathing animals such as fish will shrink due to global warming has been called into question by a new study. The theory that water-breathing animals such as fish will shrink ...

Microplastics are plastic particles smaller than 5 mm that originate from the breakdown of larger plastic products or from intentionally manufactured micro-sized plastics used in consumer products.

Around 900 fish were found following the incident in September 2024 ...