[9] The state of Oregon lists the Klamath smallscale sucker as a sensitive species of concern because of habitat degradation and various other environmental stressors.

[10] The International Game Fish Association all tackle world record for the Klamath smallscale sucker stands at 2 lbs 8 oz, taken from the Trinity River near Del Loma, California.

The Jenny Creek and Klamath populations both undergo swift growth in their early life, but differ in terms of maximum size; Jenny Creek suckers reach maturity at about 140 mm by the age of 3, while Klamath suckers are much larger and can reach up to 400 mm by the age of 10.

New research indicates that hybridization is happening amongst these species and amplifies expert concerns surrounding the integrity of their genetic lineages.

Advocates for conservation stress habitat restoration and monitoring as pivotal for protecting their populations, particularly due to the environmental challenges in the Klamath Basin, including water diversion and climate change.