title: The identity of Hamilton's Ticto Barb, Pethia ticto (Teleostei: Cyprinidae).
abstract: While describing the fishes of Ganges, Hamilton described Cyprinus ticto (now allocated to Pethia) from south-eastern parts of Bengal. The unavailability of type material and insufficient diagnostic characters in the original description resulted in ambiguities in the identity of this species. In this paper, we clarify the identity of P. ticto through an integrative-taxonomic approach. Pethia ticto can be distinguished from all other known species of the genus by a combination of characters that includes an abbreviated lateral line with 6-12 pored scales; 23-26 scales in lateral-scale row; 9 predorsal scales; ½4/1/3½-4 scales in transverse series; and a pigmentation pattern that includes a small black humeral spot covering the third and fourth lateral-line scales, a prominent spot on the caudal peduncle on the 16th-19th scales of the lateral-line scale row, and two rows of black spots scattered on the dorsal fin.
authors.affiliation: Bombay Natural History Society (BNHS), Hornbill House, Opp. Lion Gate, Shaheed Bhagat Singh Road, Mumbai, Maharashtra 400 001, India; Email: unknown.
authors.forename: Unmesh
authors.initials: U
authors.lastname: Katwate
authors.affiliation: Conservation Research Group (CRG), Department of Fisheries, St. Albert's College, Kochi, Kerala 682 018, India Systematics, Ecology & Conservation Laboratory, Zoo Outreach Organization (ZOO), 96 Kumudham Nagar, Vilankurichi Road, Coimbatore, Tamil Nadu 641 035, India; Email: rajeevraq@hotmail.com.
authors.forename: Rajeev
authors.initials: R
authors.lastname: Raghavan
authors.affiliation: Systematics, Ecology & Conservation Laboratory, Zoo Outreach Organization (ZOO), 96 Kumudham Nagar, Vilankurichi Road, Coimbatore, Tamil Nadu 641 035, India Indian Institute of Science Education and Research (IISER), G1 Block, Dr. Homi Bhabha Road, Pashan, Pune, Maharashtra 411 008, India; Email: unknown.
authors.forename: Neelesh
authors.initials: N
authors.lastname: Dahanukar
mesh_terms: D063147:Animal Distribution; D000825:Animal Structures / Q000033:anatomy & histology / Q000254:growth & development; D000818:Animals; D049628:Body Size; D001517:Coleoptera / Q000033:anatomy & histology / Q000145:classification* / Q000254:growth & development; D003530:Cyprinidae / Q000033:anatomy & histology / Q000145:classification* / Q000235:genetics / Q000254:growth & development; D005260:Female; D008297:Male; D009929:Organ Size; D010802:Phylogeny