Rainbow darter | 水產百科網

Therainbowdarterisasmall,benthicfreshwaterfishfoundinmanycreeksandsmalltomedium-sizedriversthroughoutNorthAmerica.Inparticular,itiscommon ...

Species of fish

The rainbow darter (Etheostoma caeruleum) is a small species of freshwater ray-finned fish, a darter from the subfamily Etheostomatinae, part of the family Percidae, which also contains the perches, ruffes and pikeperches. It is native to North America where it is found in small, fast-moving streams and small to medium-sized rivers. It grows to 2 to 3 inches (51 to 76 mm) in length.[1] The species is very sensitive to pollution and silt, staying in clean, pollution-free water. The rainbow darter is easily identified by three dark spots on the back, and blue and orange in the dorsal and anal fins.

The rainbow darter lives in clean, rocky riffles from March through June. It has a lifespan of about 4 years. The males can grow up to 48 mm long, while the largest female reaches just under 43 mm. The male form is re...