Palaeoniscus is really an historic ray-finned fish in the Early Permian time period, somewhere around 290 million years ago. Known for its robust ganoid scales and streamlined human body, it signifies early actinopterygian evolution, the ancestor of Most recent fish. Sunfish are definitely the heaviest bony fish species alive nowadays. https://thejillist.com/story8682753/the-definitive-guide-to-rare-fish