Barra Seca

Simpsonichthys myersi is an annual killifish from minor coastal river basins in eastern Brazil, in Bahia and Espírito Santo states. Its range lies between the rio Jucuruçu and the rio Doce. It inhabits rain-fed pools and swamps that dry out each year, when the adults die and the eggs wait in diapause until the rains return. Whether it is conspecific with S. izecksohni remains unclear.

Scleromystax prionotos is an armoured catfish known only from coastal rivers in Minas Gerais, Espírito Santo, Rio de Janeiro and São Paulo, Brazil. Like its congeners it is a facultative air breather and occasionally rises to gulp air at the surface. Its stiffened pectoral-fin spines can pierce human skin, so care is needed when handling it.