This species is distinguished from all its congeners by the following set of characters: headplump, more or less rounded, dorsoventrally compressed; head broad, with the anterioroutline of the head forming a smooth convex curve when viewed dorsally; most males withone, rarely two, dorsal-fin spines filamentous first spine reaching to between last first dorsal-fin spine base to fifth second dorsal-fin ray base, occasionally to ninth second dorsal-finray base; pectoral rays usually 20-21; D2 usually I,10; A usually I,9; basicaudal scales absent; body with broad dark brown bands, with smooth vertical margins (Ref. 87125).
- Hoese, D.F. and S. Reader 2001 A preliminary review of the eastern Pacific species of Elacatinus (Perciformes: Gobiidae). Revista de Biologia Tropical 49(Suppl. 1):157-167. (Ref. 87125) http://www.fishbase.org/references/FBRefSummary.php?id=87125&speccode=46868