[3] The mean length of snubnose darters is 45 millimetres (1.8 in), the reported average clutch size is 152, and the maximum age is less than two years.

[5] Snubnose darters inhabit flowing bedrock or gravel-bottomed pools with moderate current in small to medium streams.

[9] Examination of the stomach contents of 45 individuals broken into four size classes showed midge larvae of the family Chironomidae made up the bulk of their diets.

[7] Consumption of food is highest in April, corresponding with the peak of spawning, while it is much lower during months of temperature extremes and decreased activity, such as January and July.

[7] External parasites such as black spot disease caused by Metacercariae flukes and piscicolid leeches also affect snubnose darters.

[7] Snubnose darters reach sexual maturity at one year of age and only survive for one breeding season, which occurs in April to early May.

[7] A female responds to this display by leading the male to an appropriate site for egg deposition, such as a large stone or, more rarely, a gravel bed.

[5] Based on certain lifecycle parameters, the American Fisheries Society lists the snubnose darter as highly resilient with low vulnerability.