Hyalite provides a range of fishing experiences from alpine lakes, rushing streams, and of course, the Reservoir. Native species such as Yellowstone cutthroat trout and Arctic grayling along with introduced brook trout can be found in Hyalite Reservoir. The alpine gems of Hyalite Lake, Emerald Lake, and Heather Lake hold cutthroat and grayling. Blackmore Lake contains a sustaining population of introduced rainbow trout.
The general fishing season for streams in Hyalite is from the 3rd Saturday in May until November 30. However, to protect spawning cutthroat and grayling, the inlet stream to Hyalite Reservoir does not open until the 3rd Saturday in July. Within the reservoir there is a daily limit of 5 for trout and grayling are catch-and-release only. Cutthroat trout are catch-and-release in all streams.
See Montana Fish Wildlife and Parks web site at fwp.mt.gov/fishing/ for additional fishing regulation information.