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Glyptothorax distichus, a New Species of Catfish (Teleostei: Sisoridae) from Mizoram, North-Eastern India


Affiliations
1 Zoological Survey of India, Freshwater Fish Section, 27 J. L. Nehru Road, Kolkata – 700016, West Bengal, India
2 NIS Management Ltd., 489, Madurdah, Kalikapur, Kolkata – 700107, West Bengal, India
3 Zoological Survey of India, Arunachal Pradesh Regional Centre, Senki Valley, Itanagar - 791113, Arunachal Pradesh, India
 

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A new sisorid catfish, Glyptothorax distichus, is described from the Barak-Meghna-Surma drainage in Mizoram, North-east India. It is distinguished from its congeners in having a combination of the following characters: a chevron-shaped thoracic adhesive apparatus, with poorly developed median depression that is widely opened posteriorly by skin ridges; short dorsal fin spine; short and slender caudal peduncle; unculiferous ridges of adhesive apparatus not extending anteriorly onto gular region; absence of plicate on ventral surfaces first pectoral and pelvic fins rays, smooth skin on head and body; presence of two broad pale cream longitudinal stripes on body; and 20 + 17 Vertebrae.

Keywords

Glyptothorax distichus, Mizoram, New Species, Tlwang River.
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  • Glyptothorax distichus, a New Species of Catfish (Teleostei: Sisoridae) from Mizoram, North-Eastern India

Abstract Views: 342  |  PDF Views: 171

Authors

Laishram Kosygin
Zoological Survey of India, Freshwater Fish Section, 27 J. L. Nehru Road, Kolkata – 700016, West Bengal, India
Pratima Singh
NIS Management Ltd., 489, Madurdah, Kalikapur, Kolkata – 700107, West Bengal, India
S. D. Gurumayum
Zoological Survey of India, Arunachal Pradesh Regional Centre, Senki Valley, Itanagar - 791113, Arunachal Pradesh, India

Abstract


A new sisorid catfish, Glyptothorax distichus, is described from the Barak-Meghna-Surma drainage in Mizoram, North-east India. It is distinguished from its congeners in having a combination of the following characters: a chevron-shaped thoracic adhesive apparatus, with poorly developed median depression that is widely opened posteriorly by skin ridges; short dorsal fin spine; short and slender caudal peduncle; unculiferous ridges of adhesive apparatus not extending anteriorly onto gular region; absence of plicate on ventral surfaces first pectoral and pelvic fins rays, smooth skin on head and body; presence of two broad pale cream longitudinal stripes on body; and 20 + 17 Vertebrae.

Keywords


Glyptothorax distichus, Mizoram, New Species, Tlwang River.

References





DOI: https://doi.org/10.26515/rzsi%2Fv120%2Fi1%2F2020%2F147937