What is the fine-grained topic of the following text: Chicagoland anglers looking for rainbow trout don&apos;t have much longer to wait: Fishing season in DuPage County opens April 7 at 6 a.m. Anglers can try their luck at Grove Lake in Wood Dale, Silver Lake in Warrenville, and Pickerel Lake in Wayne (all are stocked with rainbows). Only return the topic.
Opening of rainbow trout fishing season in DuPage County, Chicagoland.