Armourfin

The armourfin split form its ancestor, It developed hard, bony plates over his fins, but elongated itself, revealing some weak spots. It doubled in size and became the top predator of Nuke River. The plates are a deep black. It moves a lot like an Earth's Eel, but up and down instead of horizontally. it's eyes have developed more so it can see better in the murky water. Its digestive tract has extended further down its body too, as to digest food easier.