The Caddo madtom (Noturus taylori) is a species of fish in the family Ictaluridae endemic to the United States.

N. taylori was named in honor of William Ralph Taylor, U.S. National Museum, in recognition of his contributions to the knowledge of catfishes.

N. taylori has a small to tiny, fragmented range, but is mostly found in the Caddo, Ouachita, and Little Missouri rivers in southwestern Arkansas.

[3] Ecological studies indicate that dam and bridge construction poses barriers to dispersal and migration of fish in the Ouachita Highlands.

[2] They were found to appear in the upper Caddo River where the water is much clearer than the lower, more turbid reaches below the impounded DeGray Reservoir, which is where their distribution seems to end.

At the within-drainage scale, fragmentation by natural or human activities (i.e., reservoirs) possibly affects individual movement and recolonization probabilities, resulting in genetic divergence (i.e., South Fork vs. Ouachita mainstem).

[9] Ecological studies indicate that dam and bridge construction poses barriers to dispersal and migration of fishes in the Ouachita Highlands.