What is the most visually interesting amphibian species?

Caecillian, it ain’t pretty but it is interesting . It has the skin of a worm the ribbing of a snake.

it has eyes but they are useless .

It lays tadpole style eggs , and has teeth more similar to a snake or shark then a frog. Also like a frog it has external gills at birth but unlike a frog quickly looses them

Now they are all interesting in my opinion as they all seem so alien yet so similar to the frogs, and toads we commonly think of. By Alan