How do newts sense food?

[em]

I hope this is the right place for this question - it seemed too general to go anywhere else, and is mostly out of curiosity.

How do newts sense food? Do they smell it? See it moving? Other?

 

[joseph]

A bit of both. Actually the lateral line system is probably involved as well. Just touching the tweezers to the surface or lifting the lid sets my Cynops orientalis swimming around and nipping at stuff.