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

Greater Redhorse Moxostoma valenciennesi

Family
Catostomidae (Suckers)
Tolerance
Sensitive
Trophic Class
Benthic Invertivore
Is Exotic to Iowa?
False
Is Lithophilous Spawner?
True
Is Hybrid?
False
State Listing Status
Not Listed
Assessment Program Statistics

This species was found at 0 bioassessment sites, 0 rapid fish bioassessment sites, 1 fisheries assessment site, and 0 fisheries presence-only assessment sites. In total, it was collected at 1 distinct sites, or 0.1% of the 1513 total sites monitored by the bioassessment program. It is the 133rd most commonly collected species.

The Greater Redhorse was collected in 0 bioassessment sampling sessions and 1 fisheries assessment session. It was present in 0 rapid bioassessment sessions and 0 presence-only sessions.

The biological assessment program has collected a total of 2 individual Greater Redhorse specimens, ranking it the #138 most collected fish.

Species Characteristics

A red-finned sucker, similar in physical appearance to the Shorthead and River Redhorses. Its body is stout, nearly round, with a large head, large mouth, deeply plicate lips, and the snout does not overhang the mouth. The lower lip is much broader than the upper lip, often looking swollen with the halves forming an obtuse angle, set at 100-160 degrees. The dorsal fin is slightly convex in adults with 13-14 rays (11-15), anal fin rays are 7, and pelvic fin rays 9 (8-10). The lateral line is complete with 42-45 scales. Scale numbers around the caudal peduncle are 16 (14-17). Breeding males develop tubercles. Pharyngeal teeth are heavy and comb-like, about 55 per arch.

Species Distribution Maps

HUC12 watersheds where this species has been found