The Zebrafish Genetics Lab of Xiaolei Xu, Ph.D., at Mayo Clinic uses African turquoise killifish to decipher cardiac aging.

Found in temporary puddles in Africa, the turquoise killifish has to grow quickly because its home dries up quickly. These fish reach adulthood in two weeks and usually live only four to six months.

Africa as a whole is strong in the faith – it is the only continent where numbers are still growing and it ordains the highest number of priests in the world. With over 52 million believers ...

The new killifish species was discovered in the temporary wetlands of Chaco National Park, researchers said. Photo by Alonso et al. (2025) While surveying the seasonal wetlands of Argentina’s ...