Regulations for gamefish in WI

After reading some of the posts. I saw some guys fishing for walleyes and bass. I thought game fishing didn't open until May 5th. Is that reg. just for lakes, because these reports were from the Wis. river.

http://dnr.wi.gov/topic/Fishing/regulations_index.html Read 'em and understand 'em.

the general regs for the state all bodies of water game fish opens on may 5th but some bodies of water have an open year round fishing for game fish excluding muskies. for the waters open year round you need to check the county by county special regs.