Written by 2025 FOMR Biological Technician Lisa Leen/Photo of redside shiners by NPS/Rawhouser Fish Traps All four of the fish traps (Sodhouse, Busse, Grain Camp, and Page Springs) along the
There are multiple examples of redband trout following an adfluvial life history behavior to prey on tui chub in lakes. This life history follows closely the life history of anadromous salmon and steelhead and it favors more rapid growth than a fluvial (entirely stream dwelling) life history.
But they are creatures of basins in the Interior West, occupying streams, rivers and lakes from western Montana to eastern Oregon and northeastern California.
The native fish in the Malheur National Wildlife Refuge have been isolated since the Pleistocene or around 11,000 to 13,000 years ago when glacial lakes subsided in the now closed basin. This provides a significant amount of time for the native fish isolated in these waterways and springs to adapt to the habitat conditions of the area.
