The Hemigrammus arua lives in the benthopelagic, freshwater, depth range 1 - 2 m environment.
Hemigrammus arua is further distinguished in having reddish-orange unpaired fins in life. According to the authors, the new tetra was collected in relatively shallow (1-1. More
new tetra, Hemigrammus arua after its type locality in lago S More
Hemigrammus arua, a new species of characid (Characiformes: Characidae) from the lower Amazon, Brazil Lima, Fl More