The Hemigrammus iota lives in the benthopelagic, freshwater environment.
•Valid as Hemigrammus iota Durbin 1909 - (Lima & Oyakawa in Reis et al. 2003:132 , Bertaco & Carvalho 2005:147 ). Current status: Valid as Hemigrammus iota Durbin 1909 Characidae: Hemigrammus clade. Distribution: Essequibo River basin, Guyana. Habitat: freshwater. More
Hemigrammus iota Durbin 1909 Hemigrammus levis Durbin 1908 Hemigrammus lunatus Durbin 1918 Hemigrammus marginatus Ellis 1911 Hemigrammus micropterus Meek 1907 Hemigrammus microstomus Durbin 1918 Hemigrammus mimus Böhlke 1955 Hemigrammus newboldi (Fernández-Yépez 1949) More