Aborichthys palinensis, a new species of river loach (Cypriniformes: Nemacheilidae) from Arunachal Pradesh, Eastern Himalaya, India

Prasanta NANDA, Lakpa TAMANG

Abstract

A new species of nemachilid loach is described based on four adult specimens (90.9-102 mm SL) from a tributary of the Palin River, in Arunachal Pradesh, northeastern India. The new species differs from all congeners by the following combination of characters: dorsal and ventral adipose crest absent, the presence of 5 rows of brown spots across dorsal fin; vent closer to the caudal-fin base (44.1-45.6% SL) than to the snout tip (52-55% SL); caudal fin broadly rounded with two concentric bars; 30-35 regular and narrow oblique stripes along the flank except anterior most part. Further can be distinguished on the following characters: pre-dorsal length (46.7-49.7% SL); pre-pectoral length (18.5-18.7% SL); pre-pelvic (length 43.1-46.2% SL); caudal fin (length 14.7-16.9% SL); dorsal to pectoral distance (30.5-33.2% SL); dorsal to caudal base distance (49.1-52.8% SL); dorsal to anal distance (28.4-33.0% SL); pectoral to anal distance (54.2-61.6% SL); anal to caudal base distance (23.6-24.9% SL); and eye diameter (8.0-11.0% HL).

Keywords

Cypriniformes, Palin River, Eastern Himalaya, Brahmaputra River, Western Arunachal.

Full Text:

PDF

References

Arunachalam M., Raja M., Malaiammal P., Mayden R.L. 2014. New species of Aborichthys (Cypriniformes: Balitoridae) from Arunachal Pradesh, India. Species 7: 33-47.

Barman R.P. 1984. A new cobitid fish of the genus Aborichthys Chaudhuri (Pisces: Cobitidae) from India. Journal of Bombay natural History Society 81(3): 680-683.

Chaudhuri, B.L. 1913. Zoological result of the Abor expedition.1911-1912. XVIII. Fish. Records of the Indian Museum 8: 243-258.

Eschmeyer W.N., Fricke R., van der Laan R. 2020. Catalog of fishes: genera, species, references (http://researcharchive.calacademy.org/research/ichthyology/catalog/fishcatmain.asp). Electronic version accessed 06.05.2020.

Hora S.L. 1921.On some new or rare species of fish from the Eastern Himalayas. Records of the Indian Museum 22(5): 731-744, pl. 1.

Hora S.L. 1925. Notes on fishes in the Indian museum. VIII. On the loaches of the genus Aborichthys Chaudhuri. Records of the Indian Museum 27(3): 23-236.

Kosygin L. 2012. Aborichthys waikhomi, a new species of fish (Teleostei: Nemacheilidae) from Arunachal Pradesh. Records of the Zoological Survey of India 112(1): 49-55.

Kosygin, L., Gurumayum S.D., Singh P., Chowdhury B.R. 2019. Aborichthys iphipaniensis, a new species of loach (Cypriniformes: Nemacheilidae) from Arunachal Pradesh, India. Uttar Pradesh Journal of Zoology 39(2): 69-75.

Kottelat M. 1990. Indochinese nemacheilines, a revision of nemacheiline loaches (Pisces: Cypriniformes) of Thailand, Burma, Laos, Cambodia and southern Vietnam.Verlag, Dr. Friedrich Pfiel, Munchen. 261 p.

Shangningam B., Kosygin L., Sinha B., Gurumayum S.D. 2019. Aborichthys kailashi and A. pangensis (Cypriniformes: Nemacheilidae), two new species from Arunachal Pradesh, India. Ichthyological Exploration of Freshwaters 1123: 1-10.

Talwar P.K., Jhingran A.G. 1991. Inland fishes of India and adjacent countries. Oxford and IBH Publishing Co. Pvt. Ltd., New Delhi, 2 volumes. 1158 p.

Thoni R.J., Hart R. 2015. Repatriating a lost name: notes on McClelland and Griffith’s Cobitis boutanensis (Cypriniformes: Nemacheilidae). Zootaxa 3999(2): 291-294.

Refbacks

  • There are currently no refbacks.