A major reason why scientists know so little about giant freshwater rays is because they hide at the bottom of the river. They’re not considered a good food fish in Southeast Asia, so they’re ...

He thinks that the temperatures have been too warm for the rays' return. Octavio hopes to one day see these majestic fish near the California coast again. And next time, he says that he plans to ...

A 150-million-year-old fossil of a cartilaginous fish named Jochen ... a group that includes modern rays. The fossil, found in Upper Jurassic rock near Painten in Bavaria, is exceptionally ...

All up, the institution, in Washington DC, has four million individual specimens representing 70 per cent of total fish diversity. The X-rays allow scientists to document internal features without ...