Descrizione originale come Etheostoma segrex:
- Norris, Steven & R.R. Miller. 1997. "Two new species of Etheostoma (Osteichthyes: Percidae) from Central Coahuila, northern México". Ichthyological Explorations of Freshwaters. 8(2):159-176 (ffm00339)
Conservazione: Etheostoma segrex non inserita dalle organizzazioni internazionali di salvaguardia delle specie a rischio nella lista rossa. This species has not been found after an extensive search at the type locality and other associated areas during 2013. It is at least in a very precarious condition, and probably extinct.