Ancient fish fossil discovered in Australian desert region

Paleontologists have discovered a remarkable fossil of a new fish species in the Australian desert, dating back 15 million years to the Miocene era. This fossil was found at a site called McGraths Flat, which is known for its well-preserved fossils. The fish, named Ferruaspis brocksi, is notable for its complete preservation, even down to its stomach contents. Researchers learned about the fish's diet, which included invertebrates like insect wings and larvae of midges. They also found a juvenile freshwater mussel attached to the fish, indicating a relationship between the two. Matthew McCurry, a key researcher, mentioned that this find helps to shed light on the evolution of Australia's freshwater fish species. This fish belongs to the Osmeriforms family, which includes modern species like the Australian grayling. The researchers hope that studying these fossils will provide insights into how these fish have changed over time. Using advanced microscopy, scientists could even see tiny structures responsible for the fish's coloration. The fish had darker backs and lighter bellies, with distinct stripes. This technique has previously been used on bird feathers, making this discovery especially unique. The McGraths Flat site has yielded many other fascinating fossils, including plants and insects. Researchers believe this area once supported a lush rainforest environment. The findings have been published in the Journal of Vertebrate Paleontology, marking a significant contribution to our understanding of ancient ecosystems.