The Hemigrammus orthus lives in the benthopelagic, freshwater environment.
as Hemigrammus orthus Durbin 1909 - (Lima & Oyakawa in Reis et al. 2003:133 , Bertaco & Carvalho 2005:147 , Zarske et al. 2006:30 ). Current status: Valid as Hemigrammus orthus Durbin 1909 Characidae: Hemigrammus clade. More