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

Flathead Catfish Pylodictis olivaris

Ictaluridae (Catfishes)
Trophic Class
Top Carnivore
Is Exotic to Iowa?
Is Lithophilous Spawner?
Is Hybrid?
State Listing Status
Not Listed
Assessment Program Statistics

This species was found at 55 bioassessment sites, 0 rapid fish bioassessment sites, 22 fisheries assessment sites, and 0 fisheries presence-only assessment sites. In total, it was collected at 77 distinct sites, or 6.2% of the 1238 total sites monitored by the bioassessment program. It is the 53rd most commonly collected species.

The Flathead Catfish was collected in 78 bioassessment sampling sessions and 23 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 520 individual Flathead Catfish specimens, ranking it the #69 most collected fish.

Species Distribution Map