Osteobrama tikarpadaensis Shangningam & Rath & Tudu & Kosygin 2020, new species
Creators: name: Shangningam, Bungdon
name: Rath, Shibananda
name: Tudu, Asha Kiran
name: Kosygin, Laishram
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Cypriniformes
Cyprinidae
Osteobrama
Osteobrama tikarpadaensis

description: Osteobrama tikarpadaensis, new species
(Figure 1)
Holotype. ZSI FF 7494, 129.0 mm SL; India: Odisha, Angul District, Mahanadi River at Marada, 3 km from Tikarpada, 20°35ʹN 84°47ʹE, L. Kosygin Singh, 8 June 2016.
Paratypes. ZSI FF 7495, 5, 90.3–129.0 mm SL, same data as holotype.
Diagnosis. Osteobrama tikarpadaensis, new species, can be distinguished from its congeners by the combination of the following characters: two pairs of minute barbels; dorsal fin with iii–iv simple and 8 branched rays, last unbranched ray stiff, serrated, with 25–33 serrae; pectoral fin with 15–16 branched rays; anal fin long, with 25–27 branched rays; predorsal scales 29–32, lateral line complete, with 59–71 scales; and an oblique black streak on anterior body immediately posterior to opercle, parallel to upper opercular margin.
Description. Morphometric data are presented in Table 1. Body deep, laterally compressed. Dorsal profile sloping upward linearly to nape, then in a broad curve to dorsal-fin origin, forming a distinct hump, then sloping gradually downward towards caudal peduncle. Ventral profile strongly curved from tip of snout to origin of anal fin. Head compressed, longer than deep. Eyes large, slightly bulging, situated anteriorly on head, visible from dorsal and ventral sides. Interorbital space slightly arched. Mouth terminal, obliquely directed upwards. Gape of mouth almost reaching anterior margin of orbit. Barbels in two pairs (rostral and maxillary), minute (Fig. 2). Nostrils almost at level of upper margin of eye, distinctly nearer to anterior margin of eye than to tip of snout.
Dorsal fin with iii (2) or iv (4) unbranched and 8 (6) branched rays, its base with 9 (1), 10 (3), 11(1) or 12(1) scales, slightly closer to tip of snout than to caudal-fin base; last unbranched ray stiff, serrated with 25 (2), 26 (1), 27 (1), 29 (1) or 33 (1) serrae; tip of first branched ray, when adpressed, nearly reaching level of posterior end of anal fin. Pectoral fin with 1 unbranched and 15(4)–16(2) branched rays, shorter than head length; first branched ray longest, extending past pelvic-fin base. Pelvic fin with 1 (6) unbranched and 9 (6) branched rays, closer to pectoral-fin origin than to anal-fin origin, shorter than head length; pelvic fin extending past anus, reaching one scale anterior to anal-fin origin when adpressed. Anal fin long, with iii (6) unbranched and 25 (2), 26 (3) or 27 (1) branched rays, its base with 23 (1), 26 (1), 27 (3) or 28 (1) scales, almost reaching caudal peduncle when adpressed. Anus located immediately anterior to anal-fin origin. Caudal fin deeply forked, with 9+8 branched rays.
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Scales small. Circumpeduncular scales 26 (1), 27 (4) or 28 (1). Pre-dorsal scales 29 (1), 30 (1), 31 (3) or 32 (1). Pre-anal scales 33 (1), 36 (2), 37 (2) or 38 (1). Lateral transverse scale rows between dorsal-fin origin to lateral line 14 (2) or 15 (4); and transverse scale rows between lateral-line to pelvic fin 13 (1) or 14 (5). Lateral line complete with 59 (1), 60 (1), 64 (2) or 71 (2) scales. Total vertebrae 36–37, comprised of 18 (1) or 19 (1) abdominal and 18 (2) caudal vertebrae (Fig. 3).
Coloration. In preserved specimens, dorsal and dorsolateral surfaces of head and body faint brown, lateral surfaces of body below lateral line greyish become lighter ventrally. Dorsal, pectoral and caudal fins light greyish. Pelvic and anal fins pale white. Upper margin of eye black; an oblique black streak on anterior body immediately posterior to opercle, parallel to upper opercular margin.
Etymology. The species is named after its type locality, Tikarpada, Odisha State, India.
Distribution. Osteobrama tikarpadaensis is presently known only from the type locality Mahanadi River at Marada, 3 km from Tikarpada, Odisha state, India (Figs. 4–5).
description: Published as part of Shangningam, Bungdon, Rath, Shibananda, Tudu, Asha Kiran & Kosygin, Laishram, 2020, A new species of Osteobrama (Teleostei: Cyprinidae) from the Mahanadi River, India with a note on the validity of O. dayi, pp. 68-76 in Zootaxa 4722 (1) on pages 68-76, DOI: 10.11646/zootaxa.4722.1.6, http://zenodo.org/record/3603710