Palaeoniscus is an ancient ray-finned fish from the Early Permian period, close to 290 million a long time in the past. Recognized for its robust ganoid scales and streamlined overall body, it represents early actinopterygian evolution, the ancestor of most modern fish. Yet another little fish appreciated in aquariums is https://bookmark-share.com/story18639409/what-does-flowerhorn-fish-mean