Fish
Fallfish
Semotilus corporalisAlso known as Windfish, Silver Chub, White Chub, Mohawk Chub
Fallfish rule the clear pools and fast runs of northeastern river systems, actively rising to take drifting insects directly from the water surface. During the spring breeding season, industrious males build massive underwater gravel mounds up to two meters wide by carrying individual pebbles in their mouths. These stone mounds safeguard their brood while doubling as vital communal spawning nurseries for several other native stream fish.
FreshwaterNest BuilderNative Fish
—observations
—countries
—peak records
Least ConcernConservation statusIUCN Red List categoriesLCNTVUENCREWEXLeast ConcernRed List categories, explained →
Diet & preyMayfly Nymphs, Crayfish, Small Minnows
Predators
- River Otter
- Northern Pike
- Bald Eagle
ThreatsSiltation, dam construction, agricultural runoff, and warming water temperatures
HabitatsCool, clear gravel-bottomed creeks, rivers, and deep lakes
Life span5–10 years
Classification
- FamilyCyprinidae
- SpeciesSemotilus corporalis
Range data is not available yet.
Interaction riskLow
- Low
- Moderate
- High
- Very high
- Why interaction risk is low
- Safe to observe at a normal distance.
Responsible observation
- Spotting Mounds: Scan shallow, gravel-bedded stream tailouts in spring to find large cone-shaped pebble piles built by breeding males.
- Stream Etiquette: Avoid wading through or kicking underwater gravel mounds, which disrupts developing eggs and delicate fry.
Same Genus "Creek Chub, Semotilus atromaculatus" by brian.gratwicke is licensed under CC BY 2.0. To view a copy of this license, visit https://creativecommons.org/licenses/by/2.0/. · cc-by
Nest Associate Unknown / CC-BY · cc-by
Competitor (c) James St. John, some rights reserved (CC BY) · cc-by
Predator USFWS Mountain Prairie / Public domain · cc0
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