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Biosystematica
© Prof. T.C. Narenderan Trust for Animal Taxonomy http://www.tcntrust.org/journal.php
ISSN: 0973-7871(online) ISSN: 0973-9955 (print)
Glyptothorax elankadensis (Order-Siluriformes: family- Sisoridae), a new fish species from Manimala River, Kerala, India MATHEWS PLAMOOTTIL1 & NELSON P. ABRAHAM2 1
Asst. Professor, Govt. College, Chavara, Kollam Dt., Kerala, India. Associate Professor, St.Thomas college, Kozhencherry, Pathanamthitta Dt., Kerala, India.
2
ABSTRACT. Glyptothorax elankadensis is described as a new sisorid species of the genus Glyptothorax, from Manimala River, Kerala, India. It is characterized as follows: Osseous serrated principal ray of dorsal and pectoral fins, with four pairs of barbels, all fins yellow tipped. Three narrow yellow bands – one mid dorsal and others mid lateral- present on longitudinal axis of body. Two small yellowish round spots on dorsal side downwards and backwards from dorsal fin origin. Median fontanel on the dorsal side of the head very faint and indistinct. Occipital process does not reach basal bone of dorsal fin. Meristic, metric and other morphological features of G. elankadensis described and compared with its relatives. Key words: Sisorid fish, Glyptothorax madraspatnam, yellow tipped fins, Elankad
Introduction
Materials and Methods
Sisorid fishes of the genus Glyptothorax inhabit Foothill Rivers and fast flowing mountain streams and are benthic in habitat. They maintain themselves attached to the rocks, boulders, stones at the bottom of water bodies where they live by means of a thoracic adhesive apparatus which is a sort of sucking disk as an adaptive structure (Weber & Beaufort, 1965; Jayaram, 2010). About forty species of Glyptothorax occur in India (Day, 1889; Hora & Silas, 1952; Misra, 1976; Jayaram, 2010). Of these, seven species are residing in the water bodies of Kerala (Hora, 1942; Silas, 1952b; Biju et al., 1998; Easa & shaji, 2003). The only one species of Glyptothorax reported from Travancore to date is G. madraspatanam (Day) (Hora, 1923; Hora & Law, 1941; Silas, 1952a; Jayaram, 2006).
Fishes were collected using cast nets and preserved in 10% formalin. Identification of the species was carried out following Day (1878, 1889), Misra (1976) and Jayaram (2006, 2010); methods used are those of Jayaram (2002) and measurements follow standard practices, using dial calipers. The values of holotype are given first and then range, in which holotype included, followed by their mean values. Measurements were taken on the left side of specimens. Body depth and body width were measured both at dorsal-fin origin and anus, vertically from dorsal-fin origin to belly and from anus to dorsum, respectively.
This Glyptothorax from Manimala river is very distinct from all other species of the genus, chiefly in colour markings and body structure; hence it is described here as a new species Glyptothorax elankadensis. The descriptions are based on three specimens collected by Mathews Plamoottil from Manimala River at Elankad of Idukki district (Fig.6) and Mundakkayam of Kottayam district (Fig.6) of Kerala. Corresponding author:
[email protected]
Abbreviations - Institutional abbreviations are: ZSIZoological Survey of India, Kolkata, West Bengal; ZSI/ WGRC- Zoological Survey of India, Western Ghats Regional Centre, Calicut; ZSI/SRC- Zoological Survey of India, Southern Regional Centre, Chennai; KUFOSKerala University of fisheries and Ocean Studies, Panangadu, Cochin; KFRI- Kerala Forest Research Institute, Peechi, Thrichur; SILURI- Siluriformes; SISOSisoridae; GLYPTO- Glyptothorax; F-Fish, FF- Fish fauna; HT- holotype; DRD-AD- distance from rayed dorsal fin to adipose dorsal fin. Biosystematica, 2012, 6(2) 17
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Glyptothorax elankadensis, sp.nov (Figures 1-5; Table 1)
Material examined Holotype: ZSI/WGRC/IR/2351, 1 specimen 110 mm standard length, Elankadu (Fig.7), Manimala river, Kerala, India, collected by Mathews Plamoottil, 12 January 2011. Paratypes: ZSI/WGRC/IR/2352, 2 specimens 115 & 101 mm standard length, Elankadu & Mundakkayam (Fig.8), Manimala river, Kerala, India, collected by Mathews Plamoottil, 10 February 2011 & 2 June 2012. Diagnosis: Medium sized Glyptothorax species with tips of all the fins yellow colored. Three narrow yellow bands – one mid dorsal and others mid lateral- present on longitudinal axis of body. Two small yellowish round spots on dorsal side downwards and backwards from dorsal fin origin. A round yellowish spot in between eyes. Median fontanel on the dorsal side of the head very faint and indistinct. Occipital process does not reach basal bone of dorsal fin. Eyes very minute; blue colored, nearly circular, level to the surface of head or a little bulging and are located behind and above the angle of jaws; mouth inferior; thoracic apparatus longer than broad, an elongated groove in the middle of it. Rayed dorsal is shorter than head and pectoral and longer than pelvic and anal; its base is longer than pectoral and pelvic but shorter than anal. First ray of pectoral and last undivided ray of dorsal fin serrated on inner side. None of the fins touch each other. Ventral surface of anterior region of head papillated. Body finely granulated. Head length 4.2, body depth at dorsal fin origin 5.9 in standard length. Eye diameter 17.1, head width 1.1, head depth 1.6, width of gape of mouth 2.6 in head length. Description: Morphometric data appear in Table 1. Data for countable characters follow; Dorsal -fin rays iii, 4-6; Anal-fin rays i-iii, 7-10; Caudal-fin rays 17; Ventral-fin rays i, 5; Pectoral-fin rays i, 8- 10. Body rigid, elongate; skin thick; head depressed. Dorsal profile arched and ventral side straight. Pre dorsal region bends downwardly in a straight line from occiput to tip of snout; post dorsal region nearly straight with only a slight slope. Median fontanel on the dorsal side of the head very faint and indistinct. A small depression is seen on the lateral side below the occiput and above the Biosystematica, 2012, 6(2)
posterior base of pectoral, on either side. Upper jaw fairly longer than lower jaw and the former overhangs the mouth. Snout length greater than that of interorbital width. Eyes very small, blue colored, nearly circular, level to the surface of head or a little bulging and are located behind and above the angle of jaws. They are situated backwards and inwards from snout, towards the middle of head and not visible from ventral side. Anterior and posterior nostrils are located close to each other, away from eyes and nearer to upper lip and are not covered by a distinct flap. Nares of both sides closely located than between eyes. Anterior nostrils fairly circular, posterior ones roughly spherical; mouth inferior and narrow; maxillaries smoothly reach adhesive apparatus and just reach the origin of pectoral, beyond eyes and nostrils and its base thick; outer mandibulars fairly reach adhesive apparatus and a little in front of anterior nostrils but never reach eyes; inner mandibulars roughly reach anterior part of adhesive apparatus; nasals are nearer to maxillaries base than to eyes, never reach eyes, but reach upper lip. Adhesive apparatus has a prominent median groove, which is deeper on its anterior end. Occipital process does not reach basal bone of dorsal fin. Rayed dorsal fin triangular and closer to tip of snout than to caudal fin base, far behind of origin of pectoral and fairly in front of ventral origin. Upper margin of dorsal almost straight and it reach just behind the origin of pelvic. Rayed dorsal is shorter than head and pectoral and longer than pelvic and anal; its base is longer than pectoral and pelvic but shorter than anal. Its first three rays are undivided; first ray is very small, osseous, hard but forwardly directing and hidden in the skin. Second ray is prominent and stouter than other rays and serrated internally but weak. Last undivided ray is not much developed. Adipose dorsal originates just above or roughly behind the point of origin of anal. It is shorter than all other fins and its base longer than that of pectoral and pelvic. Pectoral pointed in profile and it originates from below and a little inside of opercle and fairly in front of dorsal and pelvic fins on ventro lateral side. Its upper margin nearly straight and its tip reach to a region just below the origin of rayed dorsal but never reach ventral origin. It is shorter than head but longer than all other fins and its base longer than that of pelvic and shorter than all other fins. Pelvic fin triangular and it originates in front of anal on ventral side, fairly behind dorsal and pectoral, upper margin straight and its tip never reach anal but reach vent. Its base is not parallel to the longitudinal axis of body but inserted obliquely so as to form a
Glyptothorax elankadensis a new fish species from Kerala, India
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Fig.1. Dorsal view of Glyptothorax elankadensis, in living condition (ZSI/WGRC/IR 2352 -Paratype)
Fig.2. Lateral view of Glyptothorax elankadensis, in living condition (ZSI/WGRC/IR 2352- Paratype)
Fig. 3. Lateral view of G. elankadensis (Holotype) (ZSI/WGRC/IR 2351).
Biosystematica, 2012, 6(2)
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Fig.4. Head of G. elankadensis- dorsal view
Fig.5. Glyptothorax elankadensis head- Ventral view showing adhesive apparatus
Fig.6. Map of a portion of high level region of Manimala River showing the distribution of Glyptothorax elankadensis Biosystematica, 2012, 6(2)
Glyptothorax elankadensis a new fish species from Kerala, India
triangular space in front of it. Pelvic fins are longer than adipose dorsal, shorter than rayed dorsal and pectoral and nearly equal to anal. Length of its base shorter than all other fins. Last rays of ventral fin lie closely on the ventral side of the body. Anal fin triangular, its margin straight and it originates just in front of or on the level of adipose dorsal on ventral side and considerably behind vent. Its tip reaches a level just below the tip of adipose dorsal on ventral side. Anal fin is longer than adipose dorsal, equal to ventral and shorter than dorsal and pectoral. Its base is longer than that of dorsal, pectoral and pelvic. Vent not very close to anal origin. Caudal fin deeply forked its lower lobe a little broader than upper lobe and its lobes pointed. Coloration. Lateral and dorsal sides light brownish to brownish green, ventral side from snout tip to front base of anal yellowish, posterior to that brownish black. Two small yellowish round spots on dorsal side downwards and backwards from dorsal fin origin. A round yellowish spot in between eyes. All the fins yellow tipped; Pectoral and pelvic fins light yellowish green to brownish yellow. Upper margin of pectorals have a thin yellow line. Anal light brownish to brownish yellow, but darker than pectoral and pelvic. Dorsal fin darker than all other fins. Minute black dots present on dorsal and pectoral, but more clear in dorsal. Other fins also have black dots but indistinct. Adipose dorsal fin yellowish green; caudal fin brownish black. Longitudinal bands on the body are yellow to yellowish green. Inner and outer mandibulars yellow in colour; maxillaries yellowish green, tips of it pale yellow. After preservation in formalin, body color turns to deep brownish black. Comparisons. Glyptothorax elankadensis exhibits well marked differences from all other species of Glyptothorax residing in the water bodies of India. The present species differs greatly from Glyptothorax madraspatanam (Day), known from Periyar, Chaliyar and Kabani rivers of Kerala. Specimens of G. madraspatanam from ZSI, Kolkata, ZSI-SRC, Chennai, ZSI–WGRC, Calicut & KFRI, Peechi were examined and compared with the new species. In G. madraspatanam, unlike the new species, skin smooth and upper surface of head granulated (Vs. whole skin granulated in G. elankadensis), thoracic adhesive apparatus not well developed and without a pit (Vs. adhesive apparatus developed with a prominent median groove), color yellowish with dark bands (Vs. yellow bands), fins provided with black bands (Vs. fins without dark bands), dorsal spine serrated on both sides (Vs. only inner side
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of dorsal spine serrated) and pelvic fin almost reaching anal fin (Vs. pelvic fin does not reach to anal) (Day, 1878, 1889; Misra, 1976; Jayaram, 2006). Unlike the present species, in G. madraspatanam dorsal fin has seven rays (Vs. seven to nine rays in the new species), eye diameter 6.5-6.8 (Misra, 1976) or 5.8 to 7.0 (Jayaram, 2006) in head length (Vs. 13.0- 25.0), 1.1 to 1.5 (Misra, 1976) or 1.1 to 1.8 (Jayaram, 2006) in inter orbital width (Vs. 3.1- 7.0), 3.1 to 3.2 (Misra, 1976) or 2.9 to 3.7 (Jayaram, 2006) in snout length (Vs. 6.5- 13.5) and width of mouth 2.0 in head length (Vs. 2.4- 2.8). Glyptothorax davissinghi, a species described from Chaliyar River (Manimekalan & Arunachalam, 1998) differs greatly from G. elankadensis. Paratypes of the former from ZSI- SRC, Chennai examined well and compared with the new species. Unlike to present species, in G. davissinghi, body is dark grey (Vs. light brownish to brownish green in the new species), without any longitudinal bands (Vs. three longitudinal bands), ventral side golden in colour (Vs. yellow to brownish black) and tips of all fins white edged (Vs. tips yellow). (Manimekalan & Arunachalam, 1998). Besides, their adhesive apparatus is reddish in color (Vs. adhesive apparatus hyaline to whitish yellow) and with a distinct central pit (Vs. a groove present in the middle of thoracic apparatus and no pit), caudal fins are equal (Vs. unequal caudal fins), dorsal fin spine strong (Vs. dorsal spine weak), serrated on posterior edge only (Vs. dorsal spine serrated throughout inner edge), dorsal fin rays are I, 6 (Vs. III, 4- 6 in the new species), anal fin rays ii, 5 (Vs. i- iii, 7- 10), pectoral fin rays I, 9-10 (Vs. I, 8- 10) and caudal rays 18 (Vs. 17) (Manimekalan & Arunachalam, 1998; Jayaram, 2006). Moreover, their eye diameter 9.3-10.7 (Vs. 13.0- 25.0 in G. elankadensis), height of head at occiput 2.0- 2.3 (Vs. 1.6- 1.7) in head length (Jayaram, 2006). Glyptothorax elankadensis shows distinct differences to G. malabarensis collected from Valapattanam River of Kerala. Holotype and paratypes of the latter from ZSI-WGRC examined well and compared with the new species. Unlike to the former, color of G. malabarensis in life consists of a black background with three flesh red or orange transverse bands on the body; in them nasal barbels extend to anterior orbital margin (Gopi, 2010); but nasals reach only half way to eyes in the new species. Unlike the new species, in G. malabarensis, body depth 19.6- 19.9 (Vs. 15.6- 18.2 in new species), caudal peduncle length 14.3- 14.7 (Vs. 16.9- 19.8), caudal peduncle depth 12.412.7 (Vs. 7.8- 8.2) all in percent of standard length and Biosystematica, 2012, 6(2)
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thoracic apparatus without a median depression (Vs. median depression present) (Gopi, 2010). Glyptothorax anamaliensis distinctly differs from G. elankadensis in having three white transverse bands on the body. In addition to it, skin on the head and body of G. anamalaiensis is coarsely tuberculated. Adhesive apparatus of Glyptothorax anamaliensis is poorly developed and is about as long as broad (Silas, 1952a). Moreover, all the fins are tipped with white. Caudal fin lobes are equal in G. anamalaiensis but in G. elankadensis lower lobe of caudal a little broader than upper lobe. Body proportions may also differ in both; unlike to G. elankadensis, body depth 6.0- 7.8 (Vs. 5.56.4), head length 3.9-4.3 (Vs. 4.0- 4.4) in standard length, eye diameter 2.0- 2.8 (Vs. 13.0- 25.0) in head length, 6.0 in inter orbital width (Vs. 3.1- 7.0) and 1.7-2.0 (Vs. 6.5- 13.5) in snout length, height of head at occiput 1.92.5 (Vs. 1.6- 1.7) and width of mouth 3.0 (Vs. 2.4- 2.8) in head length in G. anamaliensis (Silas, 1951; Menon and Yazdani, 1968; Jayaram, 1979, 2006). Specimens of G. anamalaiensis from ZSI, Kolkata and ZSI-WGRC were examined well and compared with the new species. Glyptothorax lonah (Sykes) shows well marked difference to G. elankadensis. Color of G. lonah is grayish above and dirty white below (Beaven, 1877; Day, 1889; Silas, 1952a; Misra, 1976). In them, unlike the present species, nasal barbels reach anterior margin of orbit and outer mandibulars to gill openings; thoracic adhesive apparatus longer than broad and without a pit and occipital process reaches the basal bone of dorsal fin (Sykes, 1839; Misra, 1976; Jayaram, 2006). Dissimilar to G. elankadensis, in G. lonah eye diameter 10 in head length (Vs. 13.0- 25.0), 3.0 in inter orbital width (Vs. 3.1- 7.0), 5.0 in snout length (Vs. 6.513.5) and width of mouth 1.5 in head length (Vs. 2.42.8) (Misra, 1976; Jayaram, 2006). Specimens of G. lonah from ZSI, Kolkata were examined and compared with the new species. Unlike the present species, in G. housei Here, skin on head and body smooth, nasal barbels extend to middle or beyond eyes, outer mandibulars to base of pectoral spine or to base of first or second ray (Herre, 1941; Menon, 1954; Misra, 1976; Jayaram, 2006). Unlike G. elankadensis, thoracic adhesive apparatus broader than long, without a central depression, with edges developed over the whole surface except the posterior end of the mid-ventral line in G. housei (Herre, 1941; Silas, 1952a; Misra, 1976; Jayaram, 2006, 2010). Unlike to the present species, in G. housei, body depth 6.2 to 6.4 (Vs. 5.5- 6.4) in standard length, eye diameter 12.5 Biosystematica, 2012, 6(2)
to 13.6 (Vs. 13.0- 25.0) in head length, 3.7 to 4.2 (Vs. 3.1- 7.0) in inter orbital width and 5.7 to 6.3 (Vs. 6.513.5) in snout length (Misra, 1976; Jayaram, 2010). Moreover, in G. housei, dissimilar to the new species, head width 2.5 (Vs. 1.1- 1.2), height of head at occiput 1.8 (Vs. 1.6- 1.7), and width of mouth 2.3 (Vs. 2.4- 2.8) in head length (Jayaram, 2006). G. housei from KUFOS examined and compared with the new species. Morphologically Glyptothorax elankadensis shows some differences to G. annandalei Hora. Specimens of G. annandalei from ZSI, Kolkata, ZSI– WGRC, Calicut and KFRI, Peechi were examined and compared with the new species. In G. annandalei, unlike the present species, colour is dark grey above becoming lighter below, fins are yellowish with cluster of black dots at the base and margins of their fins are lighter (Hora, 1923; Silas, 1952a; Misra, 1976; Jayaram, 2006). Unlike G. annandalei, an yellowish round spot present in between eyes in the new fish. Dorsal fin has only one unbranched ray (Vs. three unbranched dorsal rays in the present species), pectoral fin has ten rays (Vs. eight to ten rays), and anal fin has ten rays (Vs. 812) in G. annandalei (Hora, 1923; Misra, 1976; Jayaram, 2006). In G. annandalei, unlike the new fish, occipital process reaches the basal bone of dorsal fin and thoracic apparatus without a central pit, maxillary barbels reach third or fourth pectoral ray (Vs. maxillaries just reach the origin of pectoral), eye diameter 17.0 (Vs. Vs. 13.025.0) in head length, 4 to 5.0 (Vs. 3.1- 7.0) in inter orbital width, 3.0 (Vs. 6.5- 13.5) in snout length and width of mouth 2.5 (Vs. 2.4- 2.8) in head length (Hora, 1923; Misra, 1976; Jayaram, 2006). Glyptothorax trilineatus Blyth of north Indian fresh water bodies resembles the presently described species in the presence of three longitudinal lines on the body (Jayaram, 2006, 2010). But in colour and position of dorsal fin both differs. G. trilineatus differs from G. elankadensis in the number of fin rays; in the former, dorsal fin has one unbranched and 6-7 branched rays (Vs. 3 unbranched rays and 4-6 branched rays), pectoral fin has 1 unbranched and 10-11 branched rays (Vs. one unbranched and 80- 10 branched rays) and anal fin has 1 unbranched and 9-10 branched rays (Vs. i-iii, 7-10) (Misra, 1976; Jayaram, 2006). Unlike the present species, in G. trilineatus, one dirty white longitudinal streak present along the back from occiput to caudal base, a second one along the lateral line and a third along the abdominal margin, pelvic fin reaching anal origin and caudal lobes are equal (Day, 1878, 1889; Misra, 1976; Jayaram, 2006). In the Blyth’s cat fish, eye diameter
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Glyptothorax elankadensis a new fish species from Kerala, India
Table 1: Morphometric Characters of Glyptothorax elankadensis (Holotype (HT) included in the range Sl. No Characters 1 2
Total length Standard Length (mm)
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Head length Head depth at occiput Head width at occiput Body depth at dorsal origin Body depth at anal origin Body width at dorsal origin Body width at anal origin Pre-dorsal length Post-dorsal length Pre-pectoral length Pre-pelvic length Pre-anal length Rayed dorsal fin length Pectoral-fin length Pelvic-fin length Anal-fin length Adipose dorsal height Length of base of rayed dorsal Length of base of adipose dorsal Length of base of anal Length of base of pectoral Length of base of pelvic DRD-AD Caudal peduncle length Caudal peduncle depth Caudal peduncle width Distance from anal to vent Distance from ventral to vent Head length (mm)
32 33 34 35 36 37 38 39 40 41 42 43 44 45
Head depth Head width Eye diameter Snout length Inter orbital width Inter narial width Width of gape of mouth Length of maxillaries Length of base of maxillaries Length of nasals Length of outer mandibulars Length of inner mandibulars Length of adhesive thoracic apparatus Width of adhesive thoracic apparatus
HT
Range
136 124-137 110 101-115 Percentage of Standard length 23.6 22.6- 24.7 15.0 13.0- 15.0 20.9 19.1- 21.8 18.2 15.6- 18.2 15.0 12.2- 16.3 18.2 13.9- 18.8 12.7 10.4- 13.8 36.4 31.0- 36.4 68.6 54.4- 69.8 19.5 19.5- 21.8 48.2 45.2- 49.5 65.9 63.5- 67.4 19.1 19.1- 21.8 21.8 20.9- 21.9 17.3 17.3- 17.4 17.3 16.8- 17.4 16.4 8.7- 16.4 12.3 10.4 -12.3 10.0 10.0- 15.4 13.6 13.0- 13.6 9.1 7.8- 9.1 5.5 4.3- 6.4 40.0 23.5- 40.0 19.0 16.9- 19.8 8.2 7.8- 8.2 6.4 5.4- 6.4 5.5 4.9- 5.5 13.6 11.3- 13.6 26 25.0- 26.0 Percent of head length 63.5 57.7- 63.5 88.5 84.6- 88.5 5.8 4.0- 7.7 53.8 50.0- 54.0 30.8 23.8- 30.8 19.2 16- 2.1 36.5 36.0- 42.3 88.5 84.8- 96.2 15.4 15.4- 23.1 15.4 15.4- 26.9 42.3 38.0- 46.2 23.1 23.1- 26.9 57.7 57.7- 60.0 43.3 38.5- 44.0
Mean
SD
132.3 108.7
7.23 7.09
23.6 14.3 20.6 16.7 14.5 16.9 12.3 33.8 64.3 20.7 47.6 65.6 20.9 21.5 17.3 17.2 11.8 11.2 11.9 13.4 8.6 5.4 33.0 18.6 7.9 5.9 5.2 12.6 25.7
1.04 1.09 1.36 1.33 2.13 2.66 1.75 2.71 8.60 1.16 1.80 1.98 1.57 0.57 0.06 0.30 4.02 0.94 2.97 0.30 0.70 1.05 8.56 1.46 0.20 0.48 0.25 1.20 0.58
60.4 87.0 5.8 52.6 27.5 19.4 38.3 89.8 18.2 20.5 42.2 24.7 58.5 41.9
2.92 2.09 1.85 2.25 3.50 3.54 3.50 5.80 4.28 5.88 4.08 2.00 1.33 3.02
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PLAMOOTTIL & ABRAHAM
7.5-9.7 in head (Vs.13.025.0 G. elankadensis), 2.6 inlength inter orbital width (Vs. 3.1-in7.0), 4.6 in snout length (Vs. 6.5- 13.5) and width of mouth 1.0-1.5 in head length (Vs. 2.4- 2.8) (Misra, 1976; Jayaram, 2006). Specimens of G. trilineatus from ZSI, Kolkata were examined and compared with the new species. Glyptothorax telchitta (Hamilton- Buchanan) of fresh waters of Bengal and Bihar can be differentiated from the present species in a number of characters. Unlike the present species, in G. telchitta, maxillaries reaching anterior margin of eyes (Vs. maxillaries reach beyond eyes and reach origin of pectoral), thoracic adhesive apparatus spindle shaped and without a depression (Vs. thoracic apparatus not spindle shaped but with a central groove), skin provided with bony tubercles (Vs. skin without tubercles) and fins, except caudal and adipose, with spotted bands (Vs. spotted bands absent on fins) (Hamilton- Buchanan, 1822; Hora, 1929; Misra, 1976; Srivastava, 1980; Qureshi & Qureshi, 1983; Jayaram, 2006) Comparative material Glyptothorax anamalaiensis: ZSI/F 629/2, 630/2, 2 specimens, Anamalai Hills, South India, coll. E. G. Silas; ZSI–WGRC F 18013, 42.5 mm SL; India, Tamil Nadu, Coimbatore Dist., Pollachi (a mountain stream [Bharatapuzha River drainage] at Varagiliyar), Anamalai Hills, Western Ghats. ZSI–WGRC F 18173 (2), 33.2– 34.8 mm SL, India: Kerala, Kozhikode Dist., (a stream [Kuttiadi River] at Kakkayam), Western Ghats. Glyptothorax annandalei: ZSI/F 230- 232, 3 specimens, Rihand River at dam site, Pipri, Mirzapur dt, U. P; ZSI/F 226/2, Kosi River, Nepal, coll. ZSI scientists on Kosi Survey; ZSI–WGRC F 18867, 77.2 mm SL, India: Kerala, Wynad, Kalpetta (Kabani River [Kavery River drainage] at the base of Nilgiri Hills, Western Ghats; FF/KFRI/92, Bhoothattankettu, Coll. Shaji, C.P; FF/KFRI/101, Coll. Easa & Shaji, Sairandri. Glyptothorax trilineatus: ZSI/F 238/2, Paunglaung Chaung, tributary of Sittang River, Burma, coll. V. P. Sondhi. Glyptothorax davisiinghii: ZSI- SRC 6076, 3 paratypes, 89- 114 mm SL, India, Kerala, karimpuzha and its tributaries, Punnappuzha, Nilambur reserve forest, coll. D. F Singh, Mathew. K. Sebastin and A. Manimekalan, 16.03.1995- 17.04. 1995. Glyptothorax madraspatanam: ZSI/F 10272/1, Bhavani River, Nilgiris, coll. N. Annandale; ZSI/F/10273/ 1, 2 specimens, Mettuppalayam, Coimbatore Dt, coll. Biosystematica, 2012, 6(2)
N. Annandale; ZSI/F 12409/1, 1 specimen, Cauvery River, Coorg, coll. C. R. Narayana Rao & S. Jones; 10273/1 ZSI/F 13590/1, 1 specimen, a stream within a radius of 5 miles near Pampadumpara, Western Ghats, North Travancore, coll. C. R. Narayana Rao & S. Jones; ZSI-SRC 552, 1 example, 80 mm SL, India, Tamil Nadu, Kunthi River, Vellathodu, R. S. Pillai, 19/01/1979; ZSI– WGRC 11542, 97.5 mm SL; India: Kerala, Palakkad Dist. Attapady (Bhavani River), Nilgiris, Western Ghats; FF/KFRI/70, Noolpuzha at Muthanga, Coll. Shaji & Saju Abraham. Glyptothorax lonah: ZSI/F 212/2, 213/2, Mutha River at Nandera, Poona, Bombay, coll. M. suter; ZSI/F 12550/ 1, 2 specimens, coll. H. Errockohank. Glyptothorax malabarensis: ZSI–WGRC 18343 (Holotype), 55.2 mm SL; India: Western Ghats, Kerala, Kannur District: Pottichapara (11°58’12.4"N, 75°49’38.7"E) in Aralam Wildlife Sanctuary (Urutty Stream (210 mtrs amsl), Valapattanam River drainage); Paratypes: ZSI-WGRC 18344 (2), 42.0–42.1 mm SL; same data as holotype. Glyptothorax housei: KUFOS/SILURI/SISO/ GLYPTO/1, Coll. Jayachandran Glyptothorax telchitta: ZSI/F 9735, 5374, Bilohum, Bihar, coll. Francis Day; ZSI/F 6887 & 6888, 7033, 3 specimens, Hawai, Bara Banki, U. P, coll. M. M. Khan; ZSI/F 84/2, Rihand River, ZSI/F 221/2, Mohalpahari, ZSI/ F 222/1, Kosi River, Nepal, coll. R. Budding. Distribution: Manimala River, Kerala, India. Etymology. The new species is named after the collection locality of the holotype. Acknowledgement The first author (Mathews Plamoottil) acknowledges the University Grants Commission of India for sanctioning faculty improvement programme to undergo research. The authors are grateful to the Principal, St.Thomas College Kozhencherry for the facilities provided for the study. References Beavan, R. 1877. Hand book of the fresh water fishes of India, London. 147pp. Biju, C.R., K. Raju Thomas, & C. R. Ajith Kumar. 1998. Glyptothorax lonah (Sykes)- An addition to the ichthyofauna of Kerala. Journal of Bombay natural History Society, 95 (3): 519-520. Day, F. 1878. The fishes of India: being a natural history of the fishes known to inhabit the seas and fresh waters of India, Burma, and Ceylon. Text and atlas 4 parts, London. 778pp.
Glyptothorax elankadensis a new fish species from Kerala, India
Day, F. 1889. Fauna of British India including Ceylon and Burma, Volume I, Taylor and Francis, London. 195-202. Easa, P. S., & C. P. Shaji. 2003. Biodiversity documentation for Kerala, part 8 KFRI, Peechi. 83-86. Easa, P. S., & C. P. Shaji. 1997. Fresh water fish diversity in Kerala part of Nilgiri biosphere Reserve. Current science, 73(2): 180-182. Gopi, K. C. 2010. Glyptothorax malabarensis, a new cat fish (Teleostei:Sisoridae) from the Western ghats of kerala, India. Zootaxa, 2528:53-60. Hamilton- Buchanan, F. 1822. An account of the fishes found in the River Ganges and its branches. Edinburg, London, 185, 378. Herre, A. W. C. T. 1941. Glyptothorax housei, a new sisorid cat fish from South India. Stanford Ichthyology bulletin. II (4): 117. Hora, S. L. 1923. On the composite genus Glyptosternum McClelland. Records of Indian Museum, 25:14. Hora, S. L. 1929. An aid to the study of Hamilton’s “Gangetic fishes” Memoirs of Indian Mus. 9: 187. Hora, S. L., & N. C. Law. 1941. The fresh water fish of Travancore. Records of Indian Museum, 43(1): 9-27. Hora, S. L., & S.G. Silas. 1952. Evolution and distribution of Glyptosternoid fishes of family sisoridae. Proceedings of national institute of science of India, 18(4): 309322. Hora, S. L. 1923. On the composite genus Glyptosternum McClelland. Records of Indian Museum, 25:14. Hora, S. L. 1942. A list of fishes of the Mysore state and the neighbouring hill ranges of the Nilgiris, Wayanad & Coorg. Records of Indian Museum, 44 (2):193-200. Jayaram, K. C. 2002. Fundamentals of fish taxonomy, Narendra publishing House, Delhi. 80-93. Jayaram, K. C. 2006. Cat fishes of India, Narendra Publishing House, Delhi. 206-255. Jayaram, K. C. 2010. Fresh water fishes of the Indian region, Narendra publishing House, Delhi. 328-344. Jayaram, K. C. 1979. Aid to the identification of silurids. Occational paper no.14, Zoological survey of India, Culcutta. 40- 41.
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Manimekalan, A., & H. S. Das. 1998. Glyptothorax davisinghi, a new cat fish from Nilambur in the Nilgiri Biosphere Reserve, South India. Journal of Bombay natural History Society, 95(1): 87-91. Menon, A. G. K., & G. M. Yazdani. 1968. Catalogue of type specimens in the zoological survey of India, Part 2; fishes. Records of zoological survey of India, 61(1-2): 91-190. Menon, A. G. K. 1954. Notes on the fishes of the genus Glyptothorax Blyth. Records of Indian museum, 52 (1):27-34. Misra, K. S. 1976. Fauna of India and adjacent Countries, volume III, Teleostomi: cypriniformes; siluri. Zoological Survey of India. pp 255-286. Qureshi, T. A. & N. A. Qureshi. 1983. Indian fishes. Brij brothers, Bhopal, 138. Silas, E. G. 1951. On a collection of fish from the Anamalai and Nelliampathi hill ranges (Western Ghats) with notes on its zoogeographical significances. Journal Bombay natural history society, 49(4):670-681. Silas, E. G. 1952a. Notes on the fishes of the genus Glyptothorax Blyth from peninsular India with description of a new species. Journal of Bombay natural History Society, 50: 323-330. Silas, E. G. 1952b. Fishes from the high range of Travancore. Journal of Bombay natural History Society, 50: 323327. Sykes, W. H. 1839. “An account of the fishes of Dukhen” in proceedings of learned societies, Zoological society. Annal. Magazine of natural history, 6: 164. Srivastava, G. J. 1980. Fishes of U.P and Bihar. Vishwavidyalaya Prakashan, Varanasi, 114. Talwar, P. K., & A. Jhingran. 1991. Inland fishes of India and adjacent countries, Oxford and IBH publishing Co. Pvt. Ltd., Delhi. 643-665. Weber, M., & L. F. D. Beaufort. 1965. The fishes of IndoAustralian Archipelago-II. Leiden. 263.
Received: 07-05-2012 Accepted: 14-10-2012
Biosystematica, 2012, 6(2)
