Where is it?

..............

Is it in Australia? Looks more like the UK to me.

Definitely Straya.

one of the lakes or reservoirs but which one
How about lake Eppalock

No, not that big.

Lake Yambuk?

Ahh, someone has been there, beautiful place, but no.

Is it famous for its Yellow belly fish

Not that I know of. I have seen some nice redfin taken though.

Lake Bullen -Merri?