The Moenkhausia diamantina lives in the benthopelagic, freshwater environment.
The description of Moenkhausia diamantina has been described in a paper by Ricardo Benine, Ricardo Castro and Alexandre Santos published in the most recent issue of the journal Neotropical Ichthyology. Moenkhausia diamantina is most similar to M. More
Moenkhausia diamantina, new species, is described from tributaries of the rio Paragua More