I think they probably will. My Filamentosas are two years old. The male's dorsal filaments really started to show at about the year and a half mark.
IMO, The colors of a mature Mascara Barb in breeding mode, are the best of all the Dawkinsias.
I would like to mix in a group of them into my community, but I'll have to wait for the prices to come down a bit. Lol.
