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

Topeka Shiner Miniellus topeka

TOP
Family
Leuciscidae (Minnows)
Tolerance
Sensitive
Trophic Class
Insectivore
Is Exotic to Iowa?
False
Is Lithophilous Spawner?
False
Is Hybrid?
False
State Listing Status
Threatened
Assessment Program Statistics

This species was found at 2 bioassessment sites, 0 rapid fish bioassessment sites, 0 fisheries assessment sites, and 0 fisheries presence-only assessment sites. In total, it was collected at 2 distinct sites, or 0.1% of the 1522 total sites monitored by the bioassessment program. It is the 122nd most commonly collected species.

The Topeka Shiner was collected in 2 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 4 individual Topeka Shiner specimens, ranking it the #130 most collected fish.

Species Characteristics

Stout body that is only slightly compressed. The back is straw-colored, and the scales are edged with pigment, while the sides are silvery and the belly is silvery-white. A dusky lateral band ends at the base of the caudal fin with a distinct, though small, dark wedge-shaped spot. Nuptial males have bright red or orange fins on the lower sides. A terminal mouth is small and oblique and no barbel is present. Pharyngeal teeth are arranged in a 4-4 pattern. The anal fin has 7 rays, and the lateral line has about 35 scales.

Species Distribution Maps

Taxonomic Distribution Through Time

Sampling Program
Bioassessment
FishNet
Rapid Bioassessment
Esri, USGS | Iowa DNR, Esri, TomTom, Garmin, FAO, NOAA, USGS, EPA, NPS, USFWS | IADNR BioNet
Powered by Esri
1/1/2001
1/1/2026
1/1/2001
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
1/1/2026

HUC12 watersheds where this species has been found

Esri, USGS | County of Story, Iowa DNR, Esri, TomTom, Garmin, FAO, NOAA, USGS, EPA, NPS, USFWS
Powered by Esri