Wednesday, November 9, 2016

[Ichthyology • 2016] Garra fluviatilis • A New Hillstream Fish Species (Cypriniformes: Cyprinidae) from the Kwai Noi River system, Mae Khlong basin, Thailand

Garra fluviatilis  
Kangrang, Thoni, Mayden & Beamish, 2016


Garra fluviatilis is a new species described herein from the Kwai Noi, Mae Khlong basin, in the Thong Pha Phum District of Kanchanaburi Province in western Thailand. It is diagnosed by the following combination of morphological characters: well developed upper lip with unculiferous papillae, mottled pigmentation pattern, a pleated papilliferous fold at the junction of the anterolateral lobe and anteromedial fold on the lower lip, 4–5 anal scales, relatively deep body, keeled nape, and a laterally straight anterior margin of the anteromedial fold. Based on shared apomorphic morphological characters, we hypothesize that the new species is most closely related to G. spilota in nearby Myanmar.

Keywords: Pisces, Mae Khlong basin, new species

 FIGURE 4. Garra fluviatilis, live specimen, Pakkok River, tributary to Vajiralongkorn Reservoir, Kwai Noi River drainage of the Mae Khlong basin at Ban Huay Khayeng, Thong Pha Phum District, Kanchanaburi Province, Thailand. (14°40’51”N, 98°31’13.3”E). Photo by Sakda Arbsuwan, 26 April 2011. Specimen deposited at National Inland Fisheries Institute (NIFI 5089, 52.75 mm SL).

Etymology. The name, fluviatilis, is a Latin adjective meaning “of the river”, in reference to the habitat where this species lives.

Distribution. This species is currently known from tributaries to the Kwai Noi River, Mae Khlong basin in Kanchanaburi Province, Thailand (Fig. 1).

Kangrang, Punnatut, R. j. Thoni, Richard L. Mayden and F. W. H. Beamish. 2016. Garra fluviatilis, A New Hillstream Fish Species (Cypriniformes: Cyprinidae) from the Kwai Noi River system, Mae Khlong basin, Thailand. Zootaxa. 4175(4); 335–344.  DOI: 10.11646/zootaxa.4175.4.3

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