The roundnose minnow (Dionda episcopa) is a species of leuciscid fish found in southwestern North America.

[2] As the name implies, roundnose minnow have a rounded snout with a small subterminal mouth.

Coloration usually includes olive green, white, and shades of yellow with a diagnostic black spot near the caudal fin base.

[4] This species is locally abundant and is most common in spring-influenced streams with minimal temperature variation throughout the season.

[7] Little management for roundnose minnow occurs in the United States, as most populations appear stable.