Classification / Names
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Teleostei (teleosts) >
Cypriniformes (Carps) >
Cyprinidae (Minnows or carps) > Smiliogastrinae
Etymology: Pethia: Pethia is the generic vernacular name for small cyprinids in Sinhala; rutila: From the Latin adjective 'rutila', meaning reddish, in reference to the reddish coloration of this fish.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic. Tropical
Asia: Aivapui River and Keisalam River (Karnaphuli River drainage) in Mizoram, India.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 4.5 cm SL male/unsexed; (Ref. 96523)
Short description
Identification keys | Morphology | Morphometrics
Dorsal soft rays (total): 10 - 11; Anal soft rays: 7 - 8; Vertebrae: 31 - 32. Pethia rutila can be distinguished from all species of Pethia occurring in the Ganges-Brahmaputra drainage, Kaladan drainage and the Chindwin-Irrawaddy drainage, except P. expletiforis, P. macrogramma, P. stoliczkana and P. tiantian, in having a complete lateral line. It differs from all its congeners by the combination of the following characters: a black caudal-peduncle blotch extending over scales 16-18 or 17-19 of the lateral line centered above the insertion of the last anal-fin ray; an inconspicuous black humeral spot on the scale row below the 3rd and 4th lateral-line scales; 8 or 9 predorsal scales; 4½ scales between dorsal-fin origin and lateral line, and 3½ scales between lateral line and pelvic-fin origin (Ref. 96523).
Body shape (shape guide): fusiform / normal.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Lalramliana, J.D.M. Knight and Z. Laltlanhlua, 2014. Pethia rutila (Teleostei: Cyprinidae), a new species from Mizoram, Northeast India. Zootaxa 3827(3):366-374. (Ref. 96523)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
Human uses
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