The Johnny darter is
widely distributed throughout Canada and the upper mid-western United States and reaches its
western-most extent in the North and South Platte rivers in Colorado.
Darters are in the same family as the larger yellow perch and walleye.
The Johnny darter is
widely distributed throughout Canada and the upper mid-western United States and reaches its
western-most extent in the North and South Platte rivers in Colorado.
Populations in Colorado
occur in foothill areas and are primarily associated with clear, small- to medium-sized streams
and canals.
Johnny darters are inconspicuous but present in several high mountain reservoirs.
This species, and most other darters, live on the bottom and are found in riffles, runs, and pools
with sand to cobble-sized substrates.
Small bottom-dwelling invertebrates are the primary food
of Johnny darters.
Maximum Length: 3 inches (7.5 cm).
