Neopistris

Description
Neopistris concitocanthus is among the bony fish that have replaced the sharks after their eventual extinction resulting from the narrowing diversity of their comparably primitive bodies after several mass extinction events. These fish, along with their close relatives, are referred to as "ray-finned sharks" and are among the most prominent marine predators of their time. 277 million years adter the downfall of human civilization, these fish have developed considerably different features from the fish of today. Like other fish which are descended from the since-advanced perciformes, ray-finned sharks have split-apart protrusible jaws and are capable of bending muscles attached to their fins to move rays upwards and downwards to control their own streamlining. Unlike modern-day sharks, they can also stop and breathe. The ray-finned shark depicted is 5.5 ft in length and is chasing after two smaller fish with its mouth protruded, reaching out to grab and swallow the smaller fish at the bottom.

Design
Neopistris concitocanthus is shark-like in form despite being a bony fish as it occupies their niche convergently. Its fins are shaped similarly to those of shark's and its scales are mainly silver and yellow in color. It can move its fin rays independently to control its streamlining and its jaws can protrude forwards to snatch fish.