Phoxinus

Denys, Gaël P. J., Dettai, Agnès, Persat, Henri, Daszkiewicz, Piotr, Hautecoeur, Mélyne & Keith, Philippe, 2020, Revision of Phoxinus in France with the description of two new species (Teleostei, Leuciscidae), Cybium 44 (3), pp. 205-237 : 226

Key to French species of Phoxinus (female)

1a. – Flank bars reaching from Z2 to Z4, not forming a stripe along Z3; Z4 greyish................. Phoxinus bigerri

1b. – Flank bars reaching from Z2 to Z3, forming a stripe along Z3; Z4 yellow, green or white................... 2

2a. – Stripe along Z3 green, Z4 bright yellow; belly below pectoral fin origin red; pectoral, pelvic and anal fin bases red............................ Phoxinus fayollarum

2b. – Stripe along Z3 black, Z4 golden, white or greenish; belly completely white; pectoral, pelvic and anal fin bases pinkish......................................... 3

3a. – Z4 golden; Z5 white; anal fin margin straight to slightly convex.............................. Phoxinus csikii

3b. – Z4 white or greenish; Z5 black; anal fin margin straight to slightly concave................................ 4

4a. – Z4 white; breast between pectoral fin origins completely covered by scales in some populations (two scaled patches at pectoral fin bases separated by an unscaled area in others)........................ Phoxinus septimaniae

4b. – Z4 greenish; breast between pectoral fin origins with scale patches separated by unscaled area or connected by 1-2 rows of scales.................................... 5

5a. – Z4 green; lateral line incomplete, reaching to beyond anal fin base, to caudal peduncle; snout slightly pointed.................................... Phoxinus phoxinus

5b. – Z4 green-ochre; lateral line incomplete, usually reaching to a point anterior of anal fin origin or slightly beyond base of last anal fin ray; snout slightly stout.............................................. Phoxinus dragarum