Piranha adaptations

The Piranha once lived in the Amazon rivers, but then disaster struck. The waters became too warm for the Piranha to live in and many of the died in the boiling rivers. Those who survived migrated into the ocean which was still too warm for them. Their last resort was moving to the deep sea, so they did. Over the next 500 years these Piranha would develop new adaptations to survive in their new environment such as bigger teeth, spikes on their head. and a light to attract food. They eventually became the Apex predator of the deep sea and dominates any fish that stands in their way