Cedar River St. Ansgar (REMAP #210)
Fish Session #909
- Sample Date
- 7/5/2006
- Timeframe
- Unspecified
- Reach Size
- 3150 ft
- Method
- Non-wadeable
- Sample Quality
- Fair
- Last Update
- 2/25/2025 9:31:22 AM
This site is on privately-owned land. The DNR obtains permission from the landowner(s) prior to conducting any sampling surveys.
Warm Water
Fair
Tough to maneuver the shocking boat due to large rocks and shallow water. Upstream: 503470 4809358 Downstream: 504167 4809122 Shocking times: UL-25:00 UR-22:00 LL-30:00 LR-30:00 Supplemental Backpack shocking: 30:00 Voucher fish added to University of Iowa Natural History Museum
Collected Fish
- Identity verification status for this species
- Size Class: Typically only collected for sportfish
- Taxa excluded from species count metrics.
- Click on species name for more information about that species
| Species | Catch | |
|---|---|---|
|
Golden Redhorse
Latin: Moxostoma erythrurum
Family: Catostomidae Tolerance: Intermediate Trophic: Benthic Invertivore Is Exotic: False Is LithoSpawner: True Is Hybrid: False |
73 | |
|
White Sucker
Latin: Catostomus commersonii
Family: Catostomidae Tolerance: Intermediate Trophic: Omnivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
32 | |
|
Northern Hog Sucker
Latin: Hypentelium nigricans
Family: Catostomidae Tolerance: Sensitive Trophic: Benthic Invertivore Is Exotic: False Is LithoSpawner: True Is Hybrid: False |
23 | |
|
Bluntnose Minnow
Latin: Pimephales notatus
Family: Leuciscidae Tolerance: Tolerant Trophic: Omnivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
18 | |
|
Carmine Shiner
Latin: Notropis percobromus
Family: Leuciscidae Tolerance: Sensitive Trophic: Insectivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
16 | |
|
Green Sunfish
Latin: Lepomis cyanellus
Family: Centrarchidae Tolerance: Tolerant Trophic: Generalist Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
16 | |
|
Common Carp
Latin: Cyprinus carpio
Family: Cyprinidae Tolerance: Tolerant Trophic: Omnivore Is Exotic: True Is LithoSpawner: False Is Hybrid: False |
15 | |
|
Hornyhead Chub
Latin: Nocomis biguttatus
Family: Leuciscidae Tolerance: Sensitive Trophic: Insectivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
15 | |
|
Fantail Darter
Latin: Etheostoma flabellare
Family: Percidae Tolerance: Intermediate Trophic: Benthic Invertivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
14 | |
|
Quillback Carpsucker
Latin: Carpiodes cyprinus
Family: Catostomidae Tolerance: Intermediate Trophic: Omnivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
8 | |
|
Rainbow Darter
Latin: Etheostoma caeruleum
Family: Percidae Tolerance: Sensitive Trophic: Benthic Invertivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
8 | |
|
Common Shiner
Latin: Luxilus cornutus
Family: Leuciscidae Tolerance: Intermediate Trophic: Insectivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
7 | |
|
Smallmouth Bass
Latin: Micropterus dolomieu
Family: Centrarchidae Tolerance: Sensitive Trophic: Top Carnivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
6 | |
|
Blackside Darter
Latin: Percina maculata
Family: Percidae Tolerance: Sensitive Trophic: Benthic Invertivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
6 | |
|
Sand Shiner
Latin: Miniellus stramineus
Family: Leuciscidae Tolerance: Intermediate Trophic: Insectivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
4 | |
|
Shorthead Redhorse
Latin: Moxostoma macrolepidotum
Family: Catostomidae Tolerance: Intermediate Trophic: Benthic Invertivore Is Exotic: False Is LithoSpawner: True Is Hybrid: False |
4 | |
|
Western Blacknose Dace
Latin: Rhinichthys obtusus
Family: Leuciscidae Tolerance: Intermediate Trophic: Insectivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
3 | |
|
Rock Bass
Latin: Ambloplites rupestris
Family: Centrarchidae Tolerance: Sensitive Trophic: Top Carnivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
3 | |
|
Slenderhead Darter
Latin: Percina phoxocephala
Family: Percidae Tolerance: Sensitive Trophic: Benthic Invertivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
3 | |
|
Northern Pike
Latin: Esox lucius
Family: Esocidae Tolerance: Sensitive Trophic: Top Carnivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
2 | |
|
Ozark Minnow
Latin: Miniellus nubilus
Family: Leuciscidae Tolerance: Sensitive Trophic: Herbivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
2 | |
|
Stonecat
Latin: Noturus flavus
Family: Ictaluridae Tolerance: Intermediate Trophic: Benthic Invertivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
2 | |
|
Brook Stickleback
Latin: Culaea inconstans
Family: Gasterosteidae Tolerance: Sensitive Trophic: Insectivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
2 | |
|
Central Stoneroller
Latin: Campostoma anomalum
Family: Leuciscidae Tolerance: Intermediate Trophic: Herbivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
1 | |
|
Southern Redbelly Dace
Latin: Chrosomus erythrogaster
Family: Leuciscidae Tolerance: Sensitive Trophic: Herbivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
1 | |
|
Silver Redhorse
Latin: Moxostoma anisurum
Family: Catostomidae Tolerance: Intermediate Trophic: Benthic Invertivore Is Exotic: False Is LithoSpawner: True Is Hybrid: False |
1 | |
|
Slender Madtom
Latin: Noturus exilis
Family: Ictaluridae Tolerance: Sensitive Trophic: Benthic Invertivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
1 | |
|
Johnny Darter
Latin: Etheostoma nigrum
Family: Percidae Tolerance: Intermediate Trophic: Benthic Invertivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
1 | |
|
Walleye
Latin: Sander vitreus
Family: Percidae Tolerance: Intermediate Trophic: Top Carnivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
1 |
FIBI Calculation Factors
| Factor | Value |
|---|---|
| Drainage area (mi2) | 675.3760 |
| Log(DA) | 2.8295 |
| Total Fish | 288 |
| Fish per 500 ft | 46 |
| Total Species | 29 |
| # Excluded Taxa | 0 |
| # Exotic Species | 1 |
| # LMB-BG | 0 |
| Calculation Last Updated | 2/25/2025 9:31:23 AM |
Fish Index of Biotic Integrity
| Metric Name | Value | Score |
|---|---|---|
| Native Species | 28 | 8 |
| Sucker Species | 6 | 7.5 |
| Sensitive Species | 13 | 10 |
| Benthic Invertivore Species | 11 | 9.17 |
| Top 3 Abundance Percentage | 44.44 | 2.5 |
| Benthic Invertivore Percentage | 47.22 | 2.5 |
| Omnivore Percentage | 25.35 | 2.5 |
| Top Carnivore Percentage | 4.17 | 2.5 |
| Lithophilous Spawner Percentage | 35.07 | 2.5 |
| Tolerance Index | 4.32 | 2.5 |
| Adjusted Catch per Unit Effort | 7.59 | 0.76 |
| DELT Percentage Adjustment | 1.39 | 0 |
The Fish Index of Biotic Integrity for Large River sampling sessions is currently calculated using the standard wadeable stream FIBI metrics. The IBI scores for Large River sessions are typically lower than those calculated for wadeable streams, but are included for comparison purposes.
Large Rivers score lower due to the difficulty of sampling deep rivers. Boat shockers are also selective towards larger fish species, as it is more difficult to collect smaller fish species, such as minnows, in the deeper water.
FIBI Score Explained
Sites that score between 26 - 50 are considered fair. Fish abundance ranges from lower than average to very abundant. If fish are abundant, tolerant species are usually dominant. Native fish species usually equal ten or more species. The three most abundant species typically comprise two-thirds or more of the total number of fish. One or more sensitive species, long-lived fish species or benthic habitat specialists such as suckers (Catostomidae) are present. Top carnivore species are often, but not always present in low abundance. Species that are able to utilize a wide range of food items including plant, animal and detritus are usually more common than specialized feeders, such as benthic invertivore fish. Species that require silt-free, rock substrate for spawning or feeding are typically rare or absent. Fish condition is usually good; however, elevated levels of fish exhibiting external anomalies associated with disease or stress are not unusual.
This location has been classified as a survey site. Survey sites are compared to reference sites within the same ecoregion. A reference site represents natural stream qualities that are least disturbed by human activities within the watershed. Reference sites are grouped by ecoregion to establish a benchmark against which these survey streams are compared.
EcoRegion Comparison
Scores for a sampling session are compared against reference sites within the same ecoregion:
| Max | 92 |
| 75th Percentile | 77 |
| Median | 70 |
| 25th Percentile | 60 |
| Min | 27 |
| This Session's Score | 46 |
| Total Reference Site Samples | 140 |
| Mean | 67.94 |
| Standard Deviation | 13.97 |