Sturgeon Chub

Photo by David Ostendorf

Sturgeon Chub

Macrhybopsis gelida

Federal Status: None

State Status: Threatened

Dark Blue = Designated critical habitat Light Blue = Historical records

Comments: The sturgeon chub is well-adapted to large, turbid rivers like the Missouri. These adaptations include small eyes and external sensory bumps (papillae) that help it locate food. A ventrally located mouth is welladapted for taking invertebrates off the river bed. A short gut reflects this staple diet of mostly aquatic insects that are easily digestible. The sturgeon chub’s original range was reduced by nearly half due to changes in the Missouri River. This chub is relatively short-lived (4 years) and does not reproduce until it reaches its second year. These fish are rarely seen or reported.