Piranha snake, piscis anguis

Piranhas are freshwater fish native to the central and southern river systems of South America, where they inhabit tropical rivers and streams. After global warming I believe that most of the rainforests will become dry savannas with little water. Some adaptations I think may occur to the piranha is that will become longer and more snake shaped and it will become a amphibian, the snake shaped body would make it more streamlined which accompanied with the water propulsion from the holes in the middle of its body it is able to speed down and up stream. It is now an ambush predator that will wait half buried near the water's edge with its head sticking out of the sand, when an animal comes it will push water through the propulsion system and will launch itself at it, piercing the prey with its pointed head.