The Odontostilbe microcephala lives in the benthopelagic, freshwater environment.
Astyanax bimaculatus and Odontostilbe microcephala were recorded at the mouth of the Primero and Segundo rivers. They were not captured during the first systematic surveys conducted in these rivers (Haro et al., 1986; Haro et al. More
fasciatus, Odontostilbe microcephala, Cheirodon sp., and Characidium sp.). Although the sampling effort was one More