Iowa DNR
BioNet
River & Stream Biological Monitoring
Fish and Benthic Macroinvertebrate Surveys
Physical Habitat Assessments

Freckled Madtom Noturus nocturnus

Family
Ictaluridae (Catfishes)
Tolerance
Intermediate
Trophic Class
Benthic Invertivore
Is Exotic to Iowa?
False
Is Lithophilous Spawner?
False
Is Hybrid?
False
State Listing Status
Endangered
Assessment Program Statistics

This species was found at 5 bioassessment sites, 0 rapid fish bioassessment sites, 0 fisheries assessment sites, and 0 fisheries presence-only assessment sites. In total, it was collected at 5 distinct sites, or 0.4% of the 1237 total sites monitored by the bioassessment program. It is the 111th most commonly collected species.

The Freckled Madtom was collected in 7 bioassessment sampling sessions and 0 fisheries assessment sessions. It was present in 0 rapid bioassessment sessions and 0 presence-only sessions.

The biological assessment program has collected a total of 11 individual Freckled Madtom specimens, ranking it the #117 most collected fish.

Species Distribution Map