Cobitis striata

Nakajima, Jun, 2012, Taxonomic study of the Cobitis striata complex (Cypriniformes, Cobitidae) in Japan, Zootaxa 3586, pp. 103-130 : 127

Key to 10 species and subspecies of Japanese Cobitis striata complex

1. Upper segments of first branched soft ray of pectoral fin broad and strong; prepelvic myotome number commonly 14; egg diameter over 1.1 mm ................................................................ C. magnostriata sp. nov.

- Upper segments of first branched soft ray of pectoral fin narrow and weak; prepelvic myotome number commonly equal to or less than 13; egg diameter about or less than 1.0 mm.......................................................... 2

2. Lamina circularis of adult male simple roundish plate; prepelvic myotome number commonly 13; black spot on lower caudalfin base inconspicuous or absent.......................................................................... 3

- Lamina circularis of adult male roundish plate, somewhat narrowing toward outer part; prepelvic myotome number commonly 12; black spot on lower caudal-fin base small................................................................ 6

3. Caudal fin and dorsal fin with 4–5 arcuate bars in adult; mature size small, 45–55 mm SL in male, 50–60 mm SL in female; egg diameter 0.8–0.9 mm ................................................................. C. kaibarai sp. nov.

- Caudal fin and dorsal fin with 3–4 arcuate bars in adult; mature size moderate, 60–70 mm SL in male, 60–90 mm SL in female; egg diameter 0.9–1.0 mm................................................................................ 4

4. Line L4 formed by weak dots or narrow line in non-spawning season; line L5 formed by longitudinal line in all seasons.............................................................................................. C. striata striata

- Line L4 formed by dots or weblike line in non-spawning season; line L5 organized in 11–14 roundish or ovoid blotches in nonspawning season....................................................................................... 5

5. Line L4 formed by narrow longitudinal line, narrower than L 3 in male in non-spawning season; light brown pigmentation in fresh specimens.............................................................. C. striata fuchigamii subsp. nov.

- Line L4 formed by longitudinal, jagged weblike line, broader than L 3 in male in non-spawning season; dark brown pigmentation in fresh specimens................................................ C. striata hakataensis subsp. nov.

6. Lines L3 and L5 well-developed broad stripes in all seasons........................ C. minamorii oumiensis subsp. nov.

- Lines L3 and L5 formed by narrow longitudinal line or organized blotches in non-spawning season.................... 7

7. Line L5 formed by narrow longitudinal line or organized in connected tiny blotches in non-spawning season.............. 8

- Line L5 organized in 10–16 blotches in non-spawning season................................................... 9

8. Line L5 formed by narrow incomplete longitudinal line or organized in 15–20 connected tiny blotches; body depth 15.5–20.0% in SL............................................................. C. minamorii minamorii sp. nov.

- Line L5 formed by narrow longitudinal line; body slender, body depth 12.7–19.2% in SL. C. minamorii yodoensis subsp. nov.

9. Line L2 formed by sparse angular blotches; L4 formed by tiny blotches or narrow incomplete longitudinal line in male in nonspawning season; caudal and dorsal fins with 3–4 thin arcuate bars in adult............ C. minamorii tokaiensis subsp. nov.

- Line L2 formed by longitudinal jagged line; L4 formed by longitudinal jagged weblike line, reaching to postanal body in male in non-spawning season; caudal and dorsal fins with 4–6 thin arcuate bars in adult....... C. minamorii saninensis subsp. nov.