Need a little help - Fisheries people needed

#1
So i'm in graduate school just moved from Wisconsin, and I need help in designing a project concerning stream fishes.

Only problem is I don't know the composition of the streams out here.

Anyone know of a link that could help me know some of the native stream fishes in eastern Washington or the current messed up invasive composition, something like a GAP database or similar?

Thanks for the help.

Ellsworth