Walking Red-Bellied Piranha

At present, the Red-Bellied Piranha lives in the Amazon River and its tributaries. It primarily eats worms and fish. It has two back fins and two pectoral fins. It eats a lot of food - 1/8th of its body mass per day - and it has one of the strongest bite forces in the animal kingdom regardless of size. As the Amazon shrinks and its tributaries dry up, alll of this will have to change. In many spots, the tributaries will dry up and so the piranha will have to evolve its gills to breathe both air and water. It will lengthen its pectoral fins so it can toddle between puddles of the tributary. It willl shrink due to many fish dying and the main food source being worms, and because of this its bite force will shrink. All in all the red-bellied piranha will evolve as the Amazon dies.