| Name and Code |
| Family |
| Catostomidae - suckers |
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| Species |
| Moxostoma valenciennesi |
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| Taxonomic Authority |
| Jordan 1885 |
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| Common Name(s) |
| Greater Redhorse |
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| French Name |
| chevalier jaune |
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| Conservation Status |
| Global Rank (GRank) |
| G4 (2001-02-20) |
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| National Rank (NRank) |
| N4 (2017-12-28) |
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| Provincial Rank (SRank) |
| S3 (1997-10-09) |
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| AFS Status |
| Vulnerable (1) |
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| Ecological Value |
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| General Abundance |
| uncommon |
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| Length-Weight Regression Coefficents |
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| Habitat and Feeding |
| General Habitat(s) |
| lacustrine, riverine |
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| Trophic Class |
| invertivore |
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| Habitat Preference |
| moderate to swift current riffles, runs and pools of medium to large rivers with clear water and substrates of gravel, cobble or boulders; lakes |
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| Reproduction |
| Reproductive Guild |
| Nonguarders: Open substratum spawners: Lithophils |
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| Spawning Habitat(s) |
| riverine |
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| Spawning Month(s) |
| May-June |
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| Spawning Temperature (°C) |
| 13-19 |
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| Nursery Habitat(s) |
| riverine |
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| Size and Age |
| Adult Length (cm) |
| 38.1-61.6 TL |
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| Adult Weight (kg) |
| 0.5-2.2 |
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| Age at Maturity (yrs) |
| 5 (m); 6 (f) |
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| Maximum Length (cm) |
| 80 TL |
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| Ontario Records |
| Record Length (cm) |
| 68.8 TL |
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| Ontario Range Map |
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Ontario Distribution |
| Ottawa River and tributaries, tributaries of Lakes Ontario, Erie, St. Clair and Huron, north to Spanish River, English River, Lake-of-the-Woods |
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| Photographs |
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| Notes |
| sensitive to turbidity, siltation and pollution; use as bait prohibited |
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