@article{oai:ir.kagoshima-u.ac.jp:00008749,
 author = {Motomura, Hiroyuki and 本村, 浩之},
 issue = {2},
 journal = {Ichthyological research},
 month = {May},
 note = {The taxonomic status of two nominal species of Polynemus, viz. P. dubius Bleeker, 1853 and
P. longipectoralis Weber and de Beaufort, 1922, is revised. Although regarded as separate taxa up to the
present time, examination of the holotype of P. longipectoralis revealed its close similarity to the
type series of P. dubius, in the synonymy of which the former is now included. Polynemus dubius is
redescribed as a valid species and a lectotype of the species is designated. In addition, a new species, P.
aquilonaris, previously identified as P. dubius or P. longipectoralis, is described from Indochina on the
basis of 28 specimens. Polynemus aquilonaris differs from P. dubius in having higher counts of pored
lateral-line scales [80–86 (mode 81) vs. 69–79 (78) in the latter] and scale rows below the lateral line
[14–17 (mode 14, rarely 13 or 17) vs. 13 (rarely 12)], and lower counts of gill rakers [25–29 (mode 27)
vs. 29–33 (30), respectively]. The former is known from Indochina (Chao Phraya and Mekong River
systems including Lake Tonle Sap), whereas the latter is currently known from the Malay Peninsula,
Sumatra, and Kalimantan.},
 pages = {154--163},
 title = {A new species of freshwater threadfin, Polynemus aquilonaris, from Indochina, and redescription of Polynemus dubius Bleeker, 1853 (Perciformes: Polynemidae)},
 volume = {50},
 year = {2003}
}