56 



In P. phoxinus, each scale on the anterior portion of the lateral body bears five to nine tu- 

 bercles on the apical margin (TS18[1]) (Fig.26C). In other species, each scale bears one 

 to four tubercles forward from the apical margin (TS18[0]) (Fig.26B). 

 In P. phoxinus, each scale on the lateral side of the caudal peduncle (especially at the ven- 

 trolateral portion of the caudal peduncle) bears up to 12 tubercles on the apical margin of 

 the scale (TS 19[1]; Fig.26E). In other species of the genus, each scale on the caudal pe- 

 duncle bears three to six tubercles on the apical margin (TS 19[0]; Fig.26D). 

 Tubercles on the dorsal side of the pectoral fin-rays are present in rows (Fig.27A, B). In 

 P. phoxinus, tubercles are present from the second to sixth rays (total five rays) in three 

 rows on each ray at the distal portion of the fin (TS 20[1]; Fig.27B). In other species, the 

 tubercles are present from the second to fifth ray (total four rays), in two rows at the di- 

 stal portion of the fin (TS 20[0]; Fig.27A) (Chen & Arratia 1996). 

 Few tubercles are present on the caudal fin rays in P. phoxinus (TS 21 [1]), which are not 

 found in other species of the genus (TS21[0]). 



Fig. 27: Tubercles on the dor- 

 sal side of the pectoral fin of 

 (A) Phoxinus oreas (KU 

 3275,43.5 mm SL, scale bar 

 = 1.0 mm), and (B) P. phoxi- 

 nus (ZFMK 657-659, 79.6 

 mm SL. scale bar = 176 urn). 



