Data on this species, Puntius rohani
, will likely be scarce for some time, since it is a fairly new discovery and its only known habitat (as far as is known) appears to be in a wildlife reserve.
During their review of the filamentosus
group of barbs in Puntius
, Pethiyagoda & Kottelat (2005) identified this fish as a colour variety of P. filamentosus
and suggested it might well be a distinct species. It has now been described as such by Devi, Indra & Knight (2010). Here is a link to their scientific paper which has some nice photos and a map of the known habitat:
To make matters worse, this species is threatened in the wild, so responsible collection will be severely curtailed. Sadly, a great number of fish species in India are threatened or close to extinction due to severe habitat destruction and almost no regulatory measures.
Here is the link to the entry in Fishbase, though there is little information: