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

Yellow Perch Perca flavescens

Percidae (Perches)
Trophic Class
Is Exotic to Iowa?
Is Lithophilous Spawner?
Is Hybrid?
State Listing Status
Not Listed
Assessment Program Statistics

This species was found at 37 bioassessment sites, 2 rapid fish bioassessment sites, 16 fisheries assessment sites, and 1 fisheries presence-only assessment site. In total, it was collected at 56 distinct sites, or 4.3% of the 1291 total sites monitored by the bioassessment program. It is the 63rd most commonly collected species.

The Yellow Perch was collected in 49 bioassessment sampling sessions and 35 fisheries assessment sessions. It was present in 2 rapid bioassessment sessions and 2 presence-only sessions.

The biological assessment program has collected a total of 335 individual Yellow Perch specimens, ranking it the #78 most collected fish.

Species Characteristics

The sides are bright yellow to brassy-green, with seven dark, vertical bars. The belly is lighter, and the back is a dark olive-green. There are no canine teeth on the jaws or roof of the mouth. The dorsal fin has 12 to 13 soft rays and 7 or 8 rays in the anal fin. Scales in the lateral line range from 57 to 62. The cheeks are covered with 8 to 10 rows of extended scales. The somewhat hump-backed look of the fish is due to the head being slightly concave above the eyes.

Species Distribution Map