Area Occupied Justification:
Endemic to multiple subbasins in the Pit River drainage.
Pop Size Justification:
There appear to be multiple fairly large populations.
Intervention Dependence Score:
Intervention Dependence Justification:
Population persistence may eventually require habitat improvements (management of flows, removal of alien species).
Bigeye marbled sculpin prefer constant (flow), cold (< 20?C summer temperatures), low gradient habitats.
Genetic Risk Justification:
Although information on genetic structure was not available, populations may become isolated due to dams and reservoirs.
Climate Change Justification:
Most streams have flows augmented by springs and/or managed by dam operations.
All threats were in the low to intermediate range but could increase.
Little information specific to bigeye marbled sculpin is available.