162 



Diagnosis (amended from Berg 1949, Yang & Huang 1964) 



A Phoxinus species with numerous dark blotches on sides of body; left and right supra- 

 temporal canal almost joined on the parietal; body lateral line interrupted; two medial ex- 

 trascapulae on supraoccipital; anterior process of basioccipital absent; epibranchial 4 

 bearing an elongate dorsally directed process. 



Description 



An Asian Phoxinus species with maximum standard length of 90 mm. Head large, late- 

 rally compressed, its length 247c of standard length, its width 13% of its length. Snout 

 moderately elongate, slightly shorter than orbit length in adult, or equal in young; its length 

 22% of head length, and 92% of orbit length. Eye large. Mouth terminal and moderately 

 large; mouth gape not extending to below anterior margin of the orbit; lower jaw equal 

 to upper in length. Bony interorbital space relatively narrow. 



Axis of olfactory organ elongate, elliptical; ten primary lamellae in the olfactory organ. 

 Melanophores present on both primary lamellae and axis. No data available for young in- 

 dividuals. 



Body elongate, moderately deep, not strongly compressed; round at abdomen. Dorsal pro- 

 file slightly arched. Maximum body depth 2 1 % of standard length. Ventral profile nearly 

 horizontal. Caudal peduncle short and high, its length 19% of standard length, its depth 

 54% of its length. 



Genital papilla short and small, without posterior process; much more developed in bree- 

 ding season than in nonbreeding season (Yang & Huang 1964). 



Pectoral fin small and short; its posterior margin forward from base of pelvic fin; fin-rays 

 13-14. Pelvic fin small, acute at distal end, not reaching the vent; fin-rays eight (two spe- 

 cimens), or seven (one specimen). Dorsal fin round, originating posterior to the pelvic fin 

 base; with one or two procurrent rays and eight rays. Anal fin small and round, its origin 

 slightly posterior to insertion of dorsal fin; with one or two procurrent rays, eight fin-rays. 

 Caudal fin shallowly forked, its lobes round; dorsal procurrent rays six or seven, ventral 

 procurrent rays five or six. principal rays 19 (10+9). 



Left and right supratemporal canals near to (but not connected) each other at supraocci- 

 pital bone, with 5-8 pores. Otic canal with four or five pores. Supraorbital canal inter- 

 rupted, with 9 or 10 pores. Infraorbital canal interrupted, with 11 (one specimen) or 13 

 (two specimens) pores. Preopercular canal complete, with 10 pores. Mandibular canal with 

 seven pores. Body lateral line straight, interrupted, extending to base of caudal fin. En- 

 tire abdomen scaled. 



Pharyngeal bone slender, its posterior limb slightly bent. Pitted surface narrow with four 

 major fossae. Pharyngeal teeth in two rows: 5.2-1.4. Teeth slender, hooked at tip; masti- 

 catory surface of teeth round and smooth. 



Vertebrae 38-40; precaudal vertebrae 20-21, caudal vertebrae 18-19. 



Intestine shorter than standard length, simply looped, its length 75% of standard length 



(one specimen). Gas bladder relatively slender, anterior chamber 62% of the posterior one 



