The ichthyofauna of a poorly known area in the middle-southern Espinhaco mountain range, state of Minas Gerais, Brazil: diagnostics and identification keys Author dos Santos, Sergio Alexandre https://orcid.org/0000-0003-4340-4139 Museu Nacional, Universidade Federal do Rio de Janeiro, Departamento de Vertebrados, Quinta da Boa Vista s / n. CEP 20.940 - 040, Rio de Janeiro, RJ, Brazil sergio.pisces@gmail.com Author de Britto, Marcelo Ribeiro Museu Nacional, Universidade Federal do Rio de Janeiro, Departamento de Vertebrados, Quinta da Boa Vista s / n. CEP 20.940 - 040, Rio de Janeiro, RJ, Brazil text ZooKeys 2021 2021-08-03 1054 25 66 http://dx.doi.org/10.3897/zookeys.1054.67554 journal article http://dx.doi.org/10.3897/zookeys.1054.67554 1313-2970-1054-25 BAEC60898F874A56BAD08E2922E22F60 C0E2746E8DE65F77826FCC7FF2B54A4C Euryochus thysanos Pereira & Reis, 2017 Fig. 4F Distribution. Coastal rivers in Eastern Brazil, from the rio Itapemirim, and including the larger basins of the rio Doce and Mucuri, in Espirito Santo and Minas Gerais states, to the rio Frades, state of Bahia. Diagnosis. Euryochus thysanos is diagnosed by having rounded and short inferior lip, leaving a large naked area in the ventral portion of head; inferior lip with barbel developed; 30-35 bicuspidate teeth in the premaxillary and dentary bones; absence of hypertrophied odontodes.