Mystus rufescens was
described from the Mitan Chaung, a stream forming
part of the Salween River drainage in southern Myanmar
(Vinciguerra 1890). Vinciguerra described the colour
and pattern as body, tawny reddish, with one spot
near the humeral region and one on the caudal peduncle.
Vertebrae: 40 - 42. Differs from most other species
of Mystus sensu stricto in having a large, triangular
midpeduncular spot. Maxillary barbel extending posteriorly
to anal fin origin. Oviparous, distinct pairing possibly
like other members of the same family. Remarks:
Although there is no information on the global population
and its trends for Mystus rufescens, current
evidence indicates that it is still relatively widespread
and abundant. Despite being targeted in artisanal
fisheries, the level of exploitation is not deemed
high enough to be a threat to long-term survival of
this species. This species is therefore assessed as
Least Concern (IUCN 2009).
Irrawaddy, Sittang and lower Salween basins in Myanmar.