55 



species (males or females) (TS 16[0]) or male P. phoxinus. The breeding female P. pho- 

 xinus bears tubercles on the scales at the anterior portion (between the left and right breast 

 scales) of the ventral part of the body (TS 17[1]) (Fig.25B). No tubercles are found in 

 this area in other minnows (TS 17[0]) (Fig.25A) (Chen & Arratia 1996). 



Fig.26: Scales of anterior lateral body (B-C). and of caudal peduncle (D-E) to show die distribution 

 of tubercles on the scales of Phoxinus. A: A diagram showing the area presented in B-E (B-C: area 

 a; D-E: area b); B: P. cumberlandensis (UT 44.4519, 50.0 mm SL): C: P. phoxinus (ZFMK 798. 65.5 

 mm SL): D: P. erythrogaster (KU 7300. 62.5 mm SL): E P. phoxinus (ZFMK 585-586, 81.7 mm 

 SL). Scale bars = 1 mm. 



