Like all Missouri catfish, this species has smooth, scaleless skin and barbels (“whiskers”) around the mouth. In this species, the adipose fin forms a low, keellike ridge connected to the tail fin, rather than a flaplike lobe. All madtoms have sharp, sawtoothed pectoral spines that have a mild venom. Being stung or pricked by one of the spines cause a burning pain similar to a bee or wasp sting.