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greenside darter

WAFGreensideDarterFemale-LM.jpg
greenside darter (Etheostoma blennioides) [female]
Photo © Lance Merry
 
WAFGreensideDarterMale-LM.jpg
greenside darter (Etheostoma blennioides) [male]
Photo © Lance Merry

 Features and Behaviors

​FEATURES
The snout of the greenside darter extends beyond its mouth. There is a nipple-like projection at the middle of upper lip. The upper lip is separated from the snout by a groove. The back and upper sides are yellow-green with six or seven dark crossbars and scattered orange spots. The lower sides have large "V"- or "W"-shaped blotches. A dark bar is present below the eye and in front of the eye. The dorsal fins are rust-colored at the base, and all fins, except the pelvic, have brown lines. The breeding male has bright green and blue-green coloration on his head, body and fins. The average length of the greenside darter is two and one-half to four and one-half inches. Its life span is about three years.

BEHAVIORS
The greenside darter lives in streams and rivers. It spawns from March through April. Each breeding male defends a territory. The female attaches the eggs to filamentous algae. Eggs hatch in about 18 days. The greenside darter feeds during the day, eating insects and snails.

 Illinois Range