About Cottus immaculatus Kinziger & Wood, 2010
The knobfin sculpin, scientifically named Cottus immaculatus, is a fish species that belongs to the family Cottidae. This species is native to the United States, where it naturally occurs in the Current, Eleven Point, Spring, and White river systems located in the Ozark Highlands of Arkansas and Missouri. There is also an established invasive non-native introduced population of knobfin sculpin in the Pomperaug River drainage of Connecticut. This fish reaches a maximum total length of 9.0 centimeters. Knobfin sculpins typically prefer the rocky riffles found in headwaters and small creeks.
