Mostly brownies, the rainbows are coming back. 35 years ago it was 95% rainbows. Then DOW introduced whirling disease upstream. Ten years ago it was almost 100% brownies. The newer whirling disease resistant bow strain is making a comeback.
Love the hatch carry no bait just reach to the nearest bush and take one off. Prove river in Utah has a stone fly hatch used to be a lot of fun back in the day. All artificial now