164 



Tab. 4: Body proporations (%) of Phoxinus issykkulensis. (ACGL: anterior chamber of gas bladder 

 length; BD: body depth; BIW: bony interorbital width; CPD: caudal peduncle depth; CPL: caudal 

 peduncle length; HD: head depth; HL: head length; HW: head width; IL: intestine length; number: 

 number of specimens; OL: orbit length; PCGL: posterior chamber of gas bladder length; PRDL: pre- 

 dorsal fin length; PRPL: prepelvic fin length; S: standard deviation; SL: standard length; SNL: sn- 

 out length). 



HL/SL HD/SL BD/SL CPL/SL CPD/SL PRDL/SL PRPL/SL IL/SL HW/SL HD/HL 



Number 7667676176 

 26.4 16.6 23.3 18.0 9.0 53.4 48.2 12.8 59.3 



Range - - - 



30.0 18.3 25.5 23.9 10.4 59.7 54.1 15.1 63.5 



Mean 28.1 17.1 24.4 21.5 9.9 58.0 52. 3 89.2 13.8 60.9 



S(±) 1.1 0.6 1.1 1.8 0.5 2.7 1.9 0.9 1.5 



OL/HL HW/HL SNL/HL BIW/HL BIW/OL SNL/OL PRDL/ CPD/CPL ACGL/ 



PRPL PCGL 



Number 



7 



7 



7 



7 



5 



6 



7 



7 



1 





21.2 



47.3 



22.2 



25.5 



104.0 



92.0 



102.1 



40.4 





Range 























31.9 



53.3 



27.2 



36.1 



1 17.1 



116.7 



115.8 



57.8 





Mean 



25.9 



49.2 



25.2 



30.7 



109.2 



104.5 



110.3 



46.4 



81. 



S(±) 



4.0 



2.7 



1.8 



3.3 



6.0 



11.6 



5.4 



6.1 





Description (Tab. 4) 



An Eurasian Phoxinus species with maximum standard length of 102 mm (Berg 1949). 

 Head large and elongate; laterally compressed, its length 28% of standard length, its width 

 61% of its length. Snout elongate, its length 25% of head length, and 105% of the orbit 

 length. Eye relatively small, orbit length 26% of head length. Mouth small oblique, sub- 

 terminal, extending to below anterior margin of eyes. Lower jaw slightly shorter than 

 upper one. 



Bony interorbital space relatively narrow, its width 109% of orbit length, and 31% of head 

 length. 



Axis of olfactory organ a long ellipse in shape. Primary lamellae about 10. 

 Body elongate, not strongly compressed, round at abdomen. Dorsal profile slightly arched, 

 maximum depth 24% of standard length. Caudal peduncle deep, short and laterally com- 

 pressed; its length 22% of standard length, its depth 46% of its length. 

 Genital papilla short, moderately developed, without a projection; its posterior end almost 

 reaching anal fin origin. 



Pectoral fin small and short, its posterior margin far away from the pelvic fin base, rea- 

 ching about half-way between bases of pectoral and pelvic fins; with 14 or 15 fin-rays. 

 Pelvic fin small, not reaching vent, with eight rays. 



