Barilius profundus, a new cyprinid fish (Teleostei: Cyprinidae) from the Koladyne basin, India

Barilius profundus, a new species of bariline cyprinid fish is described from the Koladyne River, Mizoram, India by M. Dishma and Prof. W. Vishwanath, Manipur University, Manipur, India.

 

It is distinguished from congeners in having the following combination of characters: great body depth at dorsal-fin origin (32.0–37.3 % SL), 17–18 pre-dorsal scales, 7–10 dark blue bars on the sides of the body, 30–32 + 2–3 lateral line scales, ½7/1/2½ lateral transverse scales and 12 circumpeduncular scales.

Monopterus ichthyophoides, a new species of scaled swamp eel from Mizoram, India

Monopterus ichthyophoides is described from specimens collected from the Sawleng River and a public well at Luangmual, both in the Barak River drainage in Mizoram, India by Dr Ralf Britz, Department of Zoology, Natural History Museum, London, Mr HT Lalremsanga , Mr Lalrotluanga Department of Zoology, Mizoram University & Dr Lalramliana, Department of Zoology, Pachhunga University College.

Monopterus ichthyophoides differs from all other species of synbranchids in having only 2 branchiostegal rays (vs 5–6). It differs further from all other synbranchids, except M. cuchia, M. fossorius, M. indicus, and M. desilvai by the presence of scales. It differs from the latter four species also by the number of vertebrae (79–82 + 34–37 = 114–117 vs M. cuchia 99–112 + 55–70 = 166–188, M. fossorius 73 + 53-56 = 126 -129, M. indicus 93–99 + 42–45=137–144, M. desilvai 75 +69 =144). It differs further from M. cuchia in having the scales restricted to the posterior part of its body (vs extending anteriorly up to the head) and from M. desilvai and M. indicus in having scales extending anteriorly far beyond the vent (vs. ending posterior to vent in M. desilvai and M. indicus, but with a small separate scale patch in M. indicus)

Batasio convexirostrum, a new species of catfish (Teleostei: Bagridae) from Koladyne basin, India

Batasio convexirostrum, a new bagrid catfish, is described from the Koladyne drainage, Mizoram, India.  by A. DARSHAN, Directorate of Coldwater Fisheries Research (ICAR), Bhimtal-263 136, Uttarakhand, India with  N. ANGANTHOIBI and W. VISHWANATH, Department of Life Sciences, Manipur University, Canchipur-795 003, Manipur, India.

It is distinguished from congeners by a combination of the following characters: body with a dark-brown oblique predorsal bar on a uniform light-brown background; very short dorsal to adipose distance (1.7–4.1% SL); snout length 39.2–45.5% head length; eye diameter 24.6–29.8% head length; gill rakers on the first branchial arch 4–5; pectoral spine length 14.6–17.6% standard length; adipose-fin base length 31.0–34.9% standard length; post-adipose distance 10.6–13.7% standard length; branched pectoral fin rays 9–10; and 39–40 vertebrae. 

For more information:

http://www.mapress.com/zootaxa/2011/f/z02901p058f.pdf

Two New species of Glyptothorax from Mizoram

Two new species of Glyptothorax (Glyptothorax ater and Glyptothorax caudimaculatus) are described from the Koladyne basin of Mizoram State, India by Dr Nongmaithem Anganthoibi and Prof. Waikhom Vishwanath, Manipur University, Manipur.

Glyptothorax ater is distinguished from its congeners by the following combination of characters: dark brown body with two horizontal light creamish stripes, one each along mid-dorsal line and lateral lines; two pale creamish ovoid spots on either side of the dorsal-fin origin connected by thin creamish oblique stripes forming spectacle like mark; greatly arched predorsal profile; shorter nasal barbel not reaching anterior margin of eye; rhomboidal thoracic adhesive apparatus with a conspicuous central depression, longitudinally elongated and with a constriction at mid-length; ventral surfaces of the pectoral spine and two to four outer rays of the pelvic fin pleated.

Glyptothorax caudimaculatus is distinguished from its congeners by the following combination of characters: rhomboidal-shaped thoracic adhesive apparatus with its unculiferous ridges extending anteriorly onto the gular region; central depression on thoracic adhesive apparatus opening posteriorly in an inverted V-shaped form; sparsely granulated skin; papillated lips; long nasal barbel, its length being 35.2-43.3 % HL; acutely pointed snout; ventral surface of paired fin rays non-plaited; and posteriorly serrated pectoral-fin spine.

For more information see:

Two new species of Glyptothorax from the Koladyne basin, Mizoram, India (Teleostei: Sisoridae)

Nongmaithem Anganthoibi* and Waikhom Vishwanath*

Ichthyological Exploration of Freshwaters Volume 21 • Number 4 • December 2010

A NEW CATFISH, Pseudecheneis koladynae FROM MIZORAM, INDIA

Pseudecheneis koladynae, a new species of sisorid catfish, is described from the Koladyne basin of Mizoram State, India by eminent ichthyologist from Manipur University, Prof Vishwanath and Dr Anganthoibi, published in Ichthyological Exploration of Freshwaters

Diagnosis:Pseudecheneis koladynae is distinguished from its congeners by the following combination of characters: three isolated ovoid yellow nuchal patches, one in mid-dorsal line in front of dorsal-fin origin and two on either side of the middle spot, slightly behind; prominent bony spur on the antero-dorsal surface of the first dorsal-fin pterygiophore; short caudal peduncle (length 16.0-18.8 % SL); pelvic fin not reaching the base of the first anal-fin ray; and distinct sexual dimorphism with robust conical papilla in males and flat leaf-like comparatively smaller bilobed papilla with a small mid-ventral lobe in females.

For more information see 

Pseudecheneis koladynae, a new sisorid catfish from Mizoram, India (Teleostei: Siluriformes)

Nongmaithem Anganthoibi and Waikhom Vishwanath

Ichthyological Exploration of Freshwaters, Vol. 21, No. 3, pp. 199-204, September 2010

Glyptothorax chimtuipuiensis, A NEW CATFISH FROM MIZORAM, INDIA

Glyptothorax chimtuipuiensis, a new species of sisorid catfish, is described from the Koladyne basin of Mizoram State, India by eminent ichthyologist from Manipur University, Prof Vishwanath and Dr Anganthoibi, published in ZOOTAXA. It is characterized by having a short and stout body with granulated skin; the dorsal profile anterior to the adipose fin strongly arched; a short and smooth dorsal spine, its length 5.1–8.9% SL; a pectoral-fin length of 16.8–21.9% SL, with the ventral surface of its first simple ray plaited; an adipose-fin base length 22.1–27.3% SL; and a chevron-shaped thoracic adhesive apparatus, the middle of its base concave, opening caudally with a depression at its posterior end, followed by a small fold of skin.

Diagnosis. A species of short, stout Glyptothorax, with granulated skin; the dorsal profile is greatly arched anterior to the adipose fin; the dorsal spine is short and smooth, its length 5.1–8.9% SL; the pectoral-fin length is 16.8–21.9% SL, the ventral surface of its first simple ray plaited; the adipose-fin base length is 22.1–27.3% SL; the thoracic adhesive apparatus is chevron shaped, wider than long, the median ridges of the apparatus perpendicular to its base, slightly diverging laterally (Fig. 1c), its base concave, open caudally, with a shallow depression at its posterior end followed by a small fold of skin.
For more information see the paper
N. ANGANTHOIBI & W. VISHWANATH (2010):
 Glyptothorax chimtuipuiensis, a new species of catfish (Teleostei: Sisoridae)
from the Koladyne basin, India

 http://www.mapress.com/zootaxa/2010/f/z02628p062f.pdf

A NEW CATFISH Pseudolaguvia spicula from NE INDIA (MIZORAM) AND BANGLADESH

A new miniature sisorid catfish has been described from the northeastern Indian state of Mizoram and Bangladesh in a recent issue of the journal Zootaxa. 

Heok Hee Ng and Lalramliana named the new catfish Pseudolaguvia spicula, after its relatively short dorsal and pectoral-fin spines of this species when compared to many congeners. 

Pseudolaguvia spicula, a new miniature sisorid catfish is discovered from the Surma-Meghna River system in India and Bangladesh.  Pseudolaguvia spicula can be distinguished from congeners in having a combination of: head width 19.2–22.6% SL, dorsal-fin spine length 11.6–14.3% SL, length of dorsal-fin base 13.2–15.9% SL, pectoral-fin spine length 15.7–17.4% SL, length of adipose-fin base 14.7–17.1% SL, pelvic-fin length 14.6–17.1% SL, body depth at anus 12.8–16.8% SL, caudal peduncle length 15.4–17.9% SL, caudal peduncle depth 7.9–9.6% SL, caudal-fin length 24.2–27.5% SL, snout length 48.6–51.9% HL, eye diameter 10.6–13.9% HL, 30–32 vertebrae, smooth anterior edge of dorsal-fin spine, thoracic adhesive apparatus reaching beyond base of last pectoral-fin ray, absence of pale y-shaped marking on dorsal surface of head and supraoccipital process, and indistinct, pale vertical bands on body. 

HHN and LRL acknowledged the Raffles Museum of Biodiversity Research and Dr Tawnenga Principal, Pachhunga University College respectively. Department of Zoology, PUC is now undertaking UGC sponsored ‘Certificate Course on Pisciculture’ under the coordination of Dr K. Lalchhandama.
LRL thanks to Remsangpuia, Kawlengmawia, Angcha-a (Chanmari West),  Lalhminghlua, Terema (Saikhawthlir),  Pa Mawia (Bilkhawthlir),  Lalthazuala (Zawlnuam, Thuampui) and Pu Thianga (Minor Irrigation) Kolasib for rendering their help in collection of the new species.

For more information, see the paper: Ng, HH and Lalramliana (2010): Pseudolaguvia spicula, a new sisorid catfish (Teleostei: Sisoridae) from Bangladesh and northeastern India. Zootaxa 2568:61-68.
http://www.mapress.com/zootaxa/2010/f/z02558p068f.pdf