This Sturgeon-Paddlefish Hybrid Shouldn't Exist | SciShow News

Researchers in Hungary accidentally created a hybrid fish by crossing Russian sturgeon eggs with American paddlefish sperm, challenging previous beliefs about fish hybridization. The hybrid offspring had varying chromosome sets, revealing insights into fish genetics. Meanwhile, a yellow-rumped leaf-eared mouse was discovered living at a record altitude, prompting questions about its survival mechanisms in low-oxygen environments.

What challenges do vertebrates face when living at extreme altitudes, as mentioned in the text?

What findings did the researchers discover about the yellow-rumped leaf-eared mouse at high altitudes?