Sorry to post this on a bass forum (still love bass fishing) but this question has been killing me! I was using a spinner bait and powerbait for trout in a pond in Utah, and foul hooked this little guy. What species of trout is this? Iv'e been told it's a tiger trout, but the pictures of tiger trouts online look significantly different. (this is also my first post, if I did anything incorrectly, let me know)

"Soon-to-be-line-thru"?

Probably tiger trout, but likely looks different because of it being a juvenile fish.  

Trout fingerling.

 I think it is a tiger trout

A trouser trout.

I agree. It does look like a Tiger Trout.

Juvenile tiger trout. Cross between a brown trout and brook trout. Nice catch!

Search "Tiger Trout Juvenile", youll be able to tell right away

It's a tiger

"Soon-to-be-line-thru"?

And a giant magnet in California.

Thanks a lot, I guess it did end up being a tiger trout. It was such an odd catch because I had just caught and released 50 rainbows then on my final cast snagged him on the belly. (Like the others he was released too!)