The beauty of the dawn tetra is rather challenging to describe by words alone, the delicate colours of the body are variable and elusive under certain conditions. Nevertheless, the colour of the body is usually a warm gold to a coppery-bronze, with an overtone of red or orange. The back is the exact same tone but darker, and also the belly silvery white with a sheen not unlike mother-of-pearl. Many very little spots cover the whole body and have the effect of slightly darkening the general body colour.
The dawn tetra isn’t very decisively marked, it has a faint spot on the shoulder, a lateral stripe along with a well defined dark spot on the lower component of the tail root. The gill covers reflect a stunning flash of metallic blue-green. Fins are mainly tinted a golden yellow, and also the lower lobe of the tail is somewhat darker than the upper lobe. The base of the tail fin is red.
As usual, the male is the much more brilliantly coloured of the sexes, he is also smaller and slimmer than the female. The adult fish average about 1.75 inch in length.
The dawn tetra breeds in the exact same way as other little Gharacins and, even though it is not too simple to breed, it has on occasions been successfully accomplished.
It might be of interest to know that the meaning of the word eos is Greek goddess of the dawn, from its rosy colour.