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A new species of the genus Pethia from Mizoram, northeastern India (Teleostei: Cyprinidae)

Dishma, Mayanglambam, Vishwanath, Waikhom (2013): A new species of the genus Pethia from Mizoram, northeastern India (Teleostei: Cyprinidae). Zootaxa 3736 (1): 82-88, DOI: http://dx.doi.org/10.11646/zootaxa.3736.1.

Glyptothorax churamanii Rameshori & Vishwanath 2012, new species

Glyptothorax churamanii, new species (Fig. 1) Type material. Holotype: MUMF 14023, 85.5 mm SL; India: Mizoram: Lawntlai: Kaladan River at Kolchaw, 22°23'N 92°57'E; Lokeshwor et al., April 2011. Paratypes: MUMF 14024–14026, 62.5–83.9 mm SL; same data as holotype; one paratype (MUMF 14025, 78.8 mm SL), dissected for osteology. Diagnosis. Glyptothorax churamanii can be distinguished from the congeners of NE Indian region in having the combination of characters: an oblong thoracic adhesive apparatus with an inverted V-shaped median depression on the posterior half, opening caudally, ridges of the apparatus not reaching the gular region; the occipital process not reaching the anterior nuchal-plate element; a slightly longer ventral lobe than dorsal lobe of the caudal fin, with diffused black submarginal bands on each lobe; sparsely tuberculate skin; pleated ventral surfaces of pectoral spine and upto two outer rays of pelvic fins, plicae on pectoral spine arranged in rows, continuous distally and dissociated in a series of three to five hexagonal-shaped spots in each row; 3+10 gill rakers on the first branchial arch; length of dorsal-fin base (12.0–13.9% SL); length of caudal fin (25.1–27.6% SL). Description. Morphometric data as in Table 1. Body elongate, sub-cylindrical. Dorsal profile rising evenly from snout tip till first dorsal-fin pterygiophore, then sloping gradually posteroventrally from end of dorsal-fin base towards caudal-fin base. Occipital process not in contact with anterior nuchal plate element. Ventral profile flat till posterior end of pelvic-fin base, then sloping gently dorsad to end of caudal-fin base. Anus and urogenital openings located two-thirds distance away from posterior pelvic-fin base towards anterior anal-fin base. Skin on head and body with sparse tuberculations. Lateral line complete, midlateral. Vertebrae 19+19. First branchial arch with 3+10(4) gill rakers. Head depressed, slightly longer than broad, triangular when viewed laterally. Snout prominent, convex dorsally. Anterior and posterior nares separated only by base of nasal barbel. Eyes small, rounded, placed anterodorsally at middle of head length. Gill openings wide extending from beneath post-temporal to isthmus. Barbels in four pairs. Maxillary barbel long, its base broad, thick, reaching anterior base of pectoral fin. Nasal barbel slender, originating from internarial septum, extending half way between its base and anterior orbital margin. Inner mandibular barbel extending till isthmus. Outer mandibular barbel originating posterolateral to inner mandibular barbel, with broad base, reaching anterior base of pectoral spine, longer than inner mandibular barbel. Mouth inferior, lips broad, papillated, upper jaw longer than lower, premaxillary tooth band exposed partially with mouth closed. Oral teeth small, villiform borne on all tooth-bearing surfaces, palate edentate. Premaxillary teeth arranged in single broad semilunate band. Dentary teeth in two crescentic patches separated at midline by narrow gap. Dorsal fin located nearer to snout tip than to caudal-fin base, with I,5,i rays, its distal and posterior margins straight. Dorsal spine long, strong, its anterior margin smooth, posterior margin serrated with 4–5 small serrae. Adipose fin with slightly concave anterior and posterior margins, distal part of fin slightly convex. Anal fin with iv,9 rays, posterior and distal margins straight, located slightly anterior to adipose-fin origin. Caudal fin with i,7,8,i rays, forked, ventral lobe slightly longer than dorsal lobe. Procurrent rays symmetrical, extending to caudal-fin base. Pectoral fin with gently convex anterior margin, straight distal and slightly concave posterior margins, with I,9,i rays. Pectoral spine covered with thick skin, anterior margin smooth, posterior serrated with 13–14 serrae, spine strong for two-third proximal length, soft distally, ventral surface with plicae arranged in rows, continuous distally, dissociated in series of 3–5 hexagonal spots in each row (Fig. 2a). Pelvic fin with I,5 rays, origin at vertical through posterior end of last dorsal-fin rays, anterior margin convex, distal margin straight. Tip of adpressed pelvic fin reaching anus and urinogenital opening, falling short of anterior anal-fin base. Ventral surfaces of first (and sometimes second) pelvic-fin rays with plicae (Fig. 2b). Thoracic adhesive apparatus with median depression present; ridges of apparatus diverging anterolaterally from inverted V-shaped median depression on posterior half, forming oblong field extending from isthmus to twothirds length of pectoral-fin base, opening caudally (Fig. 3). Apparatus not reaching gular region. Coloration. In 10% formalin: dorsal and lateral surfaces of head and body amber. Ventral surfaces of head and body yellowish-cream color. Laterosensory line along lateral line light yellowish-cream against amber. Dorsal fin amber; fin rays with scattered melanophores. Adipose fin amber with light gray distal margin. Pectoral, pelvic and anal fins yellowish cream with amber fin bases, fin rays with scattered melanophores. Caudal fin with diffused black submarginal bands on each lobe against amber background, distal margin hyaline; procurrent rays with scattered melanophores. Distribution. Known from the Kaladan River at Kolchaw, Mizoram state, Northeastern India (Fig. 4). Etymology. The species is named after Churamani, who has rendered immense help in the collection of the fish.Published as part of Rameshori, Yumnam & Vishwanath, Waikhom, 2012, A new catfish of the genus Glyptothorax from the Kaladan basin, Northeast India (Teleostei: Sisoridae), pp. 79-87 in Zootaxa 3538 on pages 80-8

A new species of the genus Garra (Teleostei: Cyprinidae) from the Barak River drainage, Manipur, India

Roni, Narengbam, Vishwanath, Waikhom (2018): A new species of the genus Garra (Teleostei: Cyprinidae) from the Barak River drainage, Manipur, India. Zootaxa 4374 (2): 263-272, DOI: https://doi.org/10.11646/zootaxa.4374.2.

Glyptothorax jayarami Rameshori & Vishwanath, 2012, new species

Glyptothorax jayarami, new species (Fig. 1) Type material. Holotype: MUMF 14012, 104.5 mm SL; India: Mizoram state, Lawntlai District, Kaladan River at Kolchaw, 22 ˚ 23 'N 92 ˚ 57 'E; Nebeshwar et al., 27 April 2008. Paratypes: MUMF 14013–14022 (9), 53.3–89.4 mm SL; same data as holotype. One paratype (MUMF 14022, 84.8 mm SL), dissected for osteology. Diagnosis. Glyptothorax jayarami is distinguished from its congeners by having an elongate, ovoid thoracic adhesive apparatus with an oval central depression, the apparatus not reaching the gular region; the base of the caudal fin with two blackish-brown blotches behind the hypural plate; the occipital process not in contact with the anterior nuchal-plate element; a long dorsal spine (17.9–19.5 % SL); the ventral surfaces of simple and adjacent branched rays of the pectoral and pelvic fins with well developed plicae, and first branchial arch with eight to nine gill rakers. Description. Morphometric data as in Table 1. Body elongate, spindle-shaped. Dorsal profile rising gradually, evenly from tip of snout to origin of dorsal fin, then sloping ventrally from origin of dorsal fin to end of caudal peduncle. Ventral profile slightly concave upto origin of pelvic fin, then sloping gently dorsally from origin of pelvic fin to end of caudal peduncle. Anus and urogenital openings located at one-third distance from anterior of origin of pelvic fin. Skin with dense tuberculations all over body. Lateral line complete, midlateral. Vertebrae 17 + 19 = 36. Gills on first branchial arch long, bearing 2 + 7 = 9 (2) or 2 + 6 = 8 (3) rakers, with forked tip on 3 rd and 6 th ceratobranchial rakers in two specimens (MUMF 14015 and MUMF 14022) respectively (Fig. 2). Head depressed, broad, triangular in lateral view. Snout prominent with bluntly-pointed tip. Anterior and posterior nares large, separated only by base of nasal barbel. Gill opening wide, extending directly from beneath posttemporal to isthmus. Osseous part of dorsal and lateral surface of head covered with thick, densely tuberculate skin. Eye ovoid, longer horizontal axis, located in mid-head length. Occipital process not in contact with anterior nuchal plate element. Barbels in four pairs. Nasal barbel short, not reaching anterior margin of eye when adpressed, extending halfway between its base and anterior orbital margin. Maxillary barbel long, broad, thick at base, extending upto middle of pectoral-fin base. Outer mandibular barbel with broad, stumpy base; longer than inner mandibular barbel, reaching base of pectoral spine, present posterolateral to inner mandibular barbel. Mouth inferior, with broad, papillated fleshy lips. Upper jaw longer than lower jaw; premaxillary tooth band partially visible with mouth closed. Teeth small, villiform. Premaxillary teeth arranged in irregular rows on broad semilunate band. Dentary teeth in two narrow crescentric bands separated at midline. Dorsal fin with I, 5,i rays, its origin nearer to snout tip than to origin of caudal fin, its distal margin slightly concave in middle. Dorsal spine strong, long, straight, smooth anteriorly, finely serrated posteriorly with 5 (4) or 6 (4) or 7 (2) serrae. Adipose fin short, its anterior margin straight, posterior margin slightly convex. Anal fin with iii, 8,i rays, its origin at level of origin of adipose fin, its posterior margin gently concave. Caudal fin deeply forked, with i,8,7,i rays, procurrent rays symmetrical, extending slightly ahead of hypural notch. Pectoral fin with I, 8,i rays, extending vertically through origin of dorsal-fin base. Pectoral spine smooth anteriorly, covered with thick skin, serrated posteriorly with 11–15 serrae. Ventral surfaces of simple and adjacent branched ray of pectoral fin with obliquely arranged plicae (Fig. 3 a). Pelvic fin with I, 5 rays, originating slightly behind dorsal-fin base, extending up to origin of anal fin when adpressed. Ventral surfaces of simple and adjacent branched ray of pelvic fin with well developed plicae arranged obliquely on simple ray, longitudinally on branched ray (Fig. 3 b). Thoracic adhesive apparatus elongate ovoid, consisting of prominent oval central median depression, opening posteriorly. Central median depression enveloped by one or two layers of discontinuous unculiferous ridges. Median ridges arranged longitudinally. Lateral ridges uninterrupted, radiating from median depression anterolaterally, branched at anterior end (Fig. 4). Adhesive apparatus not reaching gular region. Coloration. In 10 % formalin: dorsal and lateral surfaces of head and body dark brown fading to light brown, ventral surface upto origin of pelvic fin beige. Two beige stripes on body: a mid-dorsal one, extending behind dorsal-fin base and another midlateral, originating at level of origin of pectoral fin, both stripes reaching base of caudal fin. Dorsal, pectoral and pelvic fins with dark-brown bases with hyaline margins. Adipose fin dark brown, its distal margin hyaline. Anal-fin base brown with hyaline margin. Caudal fin with two blackish-brown blotches at caudalfin base, tip of both lobes hyaline. Nasal, maxillary barbels brown dorsally, beige ventrally. Mandibular barbels hyaline. Distribution. Glyptothorax jayarami is known presently only from the type locality, the Kaladan River at Kolchaw in Mizoram, India (Fig. 5). Etymology. The species is named in memory of K.C. Jayaram, who made a substantial contribution to Indian ichthyology.Published as part of Rameshori, Yumnam & Vishwanath, Waikhom, 2012, Glyptothorax jayarami, a new species of catfish (Teleostei: Sisoridae) from Mizoram, northeastern India, pp. 54-62 in Zootaxa 3304 on pages 55-59, DOI: 10.5281/zenodo.20849

Garra biloborostris, a new labeonine species from north-eastern India (Teleostei: Cyprinidae)

Garra biloborostris, a new labeonine species is described from the Kanamakra River of the Brahmaputra River basin in Assam. It can be distinguished from its congeners of northeast India in having a unique combination of the following characters: a proboscis represented by two separate and slightly elevated arch-shaped lobes, each lobe with three acanthoid tubercles on its anterodorsal marginal aspect; bulgy lateral surface of the snout giving a lobe like appearance; a prominent knob-like transverse lobe with 10 – 16 small- to medium-sized acanthoid tubercles; 30 + 3 lateral line scales; 8½ branched dorsal fin rays; and 5½ branched anal fin rays

Parambassis serrata, a new species of glassperch (Teleostei: Ambassidae) from the Kaladan drainage, India

Dishma, Mayanglambam, Vishwanath, Waikhom (2015): Parambassis serrata, a new species of glassperch (Teleostei: Ambassidae) from the Kaladan drainage, India. Zootaxa 4040 (5): 583-588, DOI: http://dx.doi.org/10.11646/zootaxa.4040.5.

Devario deruptotalea, a new species of cyprinid fish from Manipur, India (Teleostei: Cyprinidae)

Ramananda, Yumnam, Vishwanath, Waikhom (2014): Devario deruptotalea, a new species of cyprinid fish from Manipur, India (Teleostei: Cyprinidae). Zootaxa 3827 (1), DOI: 10.11646/zootaxa.3827.1.

Pethia aurea Knight 2013

<p> <i>Pethia aurea</i></p> <p> & <i>P. canius</i>: Data from Knight (2013)</p>Published as part of <i>Shangningam, Bungdon & Vishwanath, Waikhom, 2018, Pethia poiensis, a new species of cyprinid fish from the Chindwin Basin of Manipur, India, pp. 585-593 in Zootaxa 4379 (4)</i> on page 592, DOI: 10.11646/zootaxa.4379.4.10, <a href="http://zenodo.org/record/1175130">http://zenodo.org/record/1175130</a&gt