Tor sinensis Wu 1977

Hoàng, Ức, Ạm, Ạnh Ph, Durand, Jean-Dominique, Ần, Ngân Tr Ọng Tr & Phan, Phúc Đình, 2015, Mahseers genera To r and Neolissochilus (Teleostei: Cyprinidae) from southern Vietnam, Zootaxa 4006 (3), pp. 551-568 : 562-563

Tor sinensis Wu 1977

Specimens Examined: upper Ea Krong No drainage: upper Mekong basin in montane evergreen forest in Bidoup- Núi Bà National Park, Lâm Đồng Province, Vietnam (12°16’23.68” N 108°26’30.17” E, 672 m): UNS00873, 205 mm SL, 25 June 2014; UNS00614, 213 mm SL, 11 March 2012 (12°15’9.37” N 108°26’23.18” E, 650 m); ZRC 54629, 214 mm SL, 12 March 2012; UNS00874, 133 mm SL, 24 June 2014; ZRC 54630, 97 mm SL, 25 June 2014 by Hoàng Đức Huy, Ph ạm Mạnh Hùng and Tr ần Tr ọng Ngân; upper Mekong basin in Vietnam (12°58’02.5” N 107°32’58.2” E): UNS00876, 98 mm SL, 25 June 2014; the Sre Pok River: upper Mekong basin in Dak Lak Province, Vietnam (12°58’02.5” N 107°32’58.2” E): UNS00945, 300 mm SL, 27 December 2014 by Phan Đình Phúc ( Fig. 2 ).

Diagnosis. Tor sinensis differs from T. ater in having lateral scales 24–25 vs. 30–31, scales in transverse row 3/ 1/2 vs. 5/1/2, predorsal scales 10 vs. 11–12, median lobe in lower lip long vs. short, stripe along side of body absent vs. present. Tor sinensis differs from T. mekongensis in having lateral scales 23–28 vs. 23, pelvic-fin rays 1/8–9 vs.

2/7, median lobe long vs. short, rostral hood prolonged into a lobe vs. rounded and blunt. Tor sinensis differs from T. dongnaiensis in having transverse scale rows 3/1/2 vs. 4/1/2, dorsal-fin rays 4/8 vs. 4/9, lobes of caudal fin nearly equal vs. unequal. Tor sinensis differs from T. tambroides in having SL/BD 3.6–4.0 vs. 3.0–3.4, lateral scales 24–25 vs. 24–26, median projection in upper lip present vs. absent. Tor sinensis differs from T. yingjiangensis in having colour in life silver-grey vs. yellow, SL/HL 3.3–3.9 vs. 3.0–3.5. Tor sinensis differs from T. tambra in Java in lateral scales 24–25 vs. 22–24, predorsal scales 10 vs. 8–9, median lobe in lower lip long vs. short.

Colour in life. Head dark on back, white on lower jaw. Body dark on back, yellow to grey-silver on side, snowy white on abdomen. A slate-grey longitudinal stripe run from posterior of head to the caudal base in adult specimen (UNS00945), similar to T. laterivittatus , but other specimens without a longitudinal stripe. Scales silver with black at bases. Dorsal fin yellow grey, pelvic fin and anal fin dark grey. Pectoral fin pinkish on base, and black on rays. Caudal fin almost dark grey with yellow and pink tinge distally. Juvenile specimens light silver on scales and fins hyaline. Their dorsal fins green-yellow, dark grey on rays; distal margin concave. Pectoral fins pinkish orange and pelvic fin orange on coastal rays. Anal fins pinkish yellow on distal parts. Caudal fin greenish yellow, dark bold on rays ( Fig. 6 a, b).

Figures

FIGURE 2. Type localities of Tor mekongensis (black star) and T. dongnaiensis (white star), and collection localities of T. sinensis (black triangle), and Neolissochilus stracheyi (white cross).

FIGURE 6. Tor sinensis Wu 1977: (a) juvenile (UNS 00876, 98 mm SL), (b) sub-adult (UNS 00873, 205 mm SL) in life; lateral views. Scale 10 mm.