Author: Durbin, 1909
Remark: Géry (1977:494) and Planquette <i>et al.</i> (1996:274) consider <i>Hemigrammus orthus</i> Durbin, 1909 as being possibly a synonym of <i>Hemigrammus bellotii</i> (Steindachner, 1882).
Comments: Maximum length questionable (Ref. 38376).