The Citico darter (Etheostoma sitikuense) is a threatened species of darter native to Tennessee. This species was formerly subsumed within Etheostoma percnurum (duskytail darter). The E. percnurum group now consists of four distinct species: E. percnurum, E. marmorpinnum (marbled darter), E. lemniscatum (tuxedo darter), and E. sitikuense.