Tab. 7: Body proportions (%) of Phoxinus tennesseensis. (ACGL: anterior chamber of gas bladder 

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

 duncle length; HD: head depth; HL: head length; HW: head width; IL: intestine length; Number: num- 

 ber of specimens; OL: orbit length; PCGL: posterior chamber of gas bladder length; PRDL: predorsal 

 fin length; PRPL: prepelvic fin length; S: standard deviation; SL: standard length; SNL: snout length). 



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



Number 



16 



, 16 



16 



16 



16 



15 



15 



3 



16 



16 





22.5 



13.7 



17.5 



22.5 



8.0 



51.6 



43.3 



210 .0 



11.7 



55.2 



Range 

























26.7 



17.1 



24.1 



27.2 



11.5 



56.2 



50.7 



22 0.4 



13.7 



63.2 



Mean 



25.3 



15.5 



20.4 



26.1 



9.6 



54.2 



47. 9 



215.2 



13.0 



61.3 



S(±) 



1.2 



1.1 



2.4 



1.5 



1.1 



1.5 



2.2 



5.2 



0.6 



4.0 



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



PRPL PCGL 



Number 



16 



16 



16 



16 



16 



14 



14 



16 



2 





26.7 



50.5 



18.3 



28.4 



84.4 



74.1 



109.0 



2 9.5 



58.0 



Range 























40.0 



55.1 



33.3 



36.8 



122.9 



115.6 



123.2 



44.8 



62.0 



Mean 



29.5 



51.5 



27.3 



32.5 



111.9 



100.3 



1 14.0 



37.1 



60.0 



S(±) 



4.9 



2.9 



4.4 



4.4 



16.5 



13.2 



5.7 



5.6 



2.83 



Morphology of olfactory organ changing less ontogenetically than in other Phoxinus spe- 

 cies. Young individuals (25.6 mm or less standard length) with an elongate axis situated 

 at middle portion of organ, and extending posteriorly; seven or eight primary lamellae pre- 

 sent, without melanophores. Large specimens with axis similar to that in young, with about 

 1 1 primary lamellae, melanophores present in most primary lamellae, fewer melanophores 

 present on axis. 



Body stout, not strongly compressed, though its posterior part more compressed than the 

 anterior part of body. Maximum depth 20% of standard length. Caudal peduncle length 

 26% of standard length, its depth 37% of its length. 



Genital papilla slender and longer in female than in male; its posterior end close to ori- 

 gin of anal fin. Papilla bearing a skin fold, margin of genital orifice serrated in male, but 

 not in female. Both male and female bearing a short process at posterior end of papilla, 

 the process longer and sharper in male than in female. 



Pectoral fin fan-like, sharp and elongate, with 15-17 rays. Pelvic fin originating in ad- 

 vance of dorsal fin origin; pelvic fins sharper and longer in female than in male, the po- 

 sterior tip extending beyond anal fin's origin in female; posterior margin extending to (not 

 beyond) anal origin in male; with eight rays. 



Dorsal fin originates farther posteriorly than origin of pelvic fin; predorsal length 54% of 

 standard length, and 114% of prepelvic length; with three procurrent fin rays, eight fin 



