Original description as Gobius tajasica:
- Lichtenstein, Martin H. C. 1822. "Die Werke von Marcgrave und Piso Über die Naturgeschichte Brasiliens, erläutert aus den wieder aufgefundenen Original-Abbildungen". Abhandlungen der Königlichen Akademie der Wissenschaften zu Berlin 1820-21. 267-268 (ffm00413)
Synonyms (2):
- Gobius mexicanus Günther, 1861, with type locality at Mexico. Determiner: Castro-Aguirre et al., 1999
- Euctenogobius latus O'Shaughnessy, 1875, with type locality at Bahia, Brazil. Determiner: Watson, 1996
- Suiboga travassosi Pinto, 1960, with type locality at Rio Pituaçu, Salvador city, Bahia, Brazil. Determiner: Watson, 1996
Conservation: Awaous tajasica is not evaluated by the international union for the conservation of nature in the iucn red list of threatened species.