Now the region’s rivers are trickling and boiling through the summer, and a coalition of conservation, retail and outfitter groups on Wednesday sent a letter to Gov. Greg Gianforte urging a major response.
Montana Standard
Outfitters to Gianforte: Save Montana’s Streams
The outside bend. 
Many species of fish exhibit temperature-dependent sex determination. If newly-hatched fish survive the heat then they may have a skewed sex ratio. Hotter temperatures exposures to hatchlings will dramatically influence future populations. Flounder populations in the Gulf of Mexico have a male bias and generally lower numbers, presumably due to a warming climate.