Aphanius anatoliae (Leidenfrost, 1912)

Yoğurtçuoğlu, Baran & Freyhof, Jörg, 2018, Aphanius irregularis, a new killifish from south-western Anatolia (Cyprinodontiformes: Aphaniidae), Zootaxa 4410 (2), pp. 319-330 : 320

Key to species in the Aphanius anatoliae group

The key is largely based on the colour pattern of adult, nuptial males. It might be difficult to differentially diagnose immature individuals and individuals out of the spawning season.

1a Scales on back and belly usually absent, scales absent or rare on flank in one species; usually 1–3 lines of large, not or only slightly overlapping scales on mid-lateral flank.............................................................. 2

1b Body completely covered with overlapping scales............................................................ 5

2a Lateral-head profile almost quadratic, lower jaw large, directing upward; body depth 4.0–5.3 times in standard length...... 3

2b Lateral-head profile triangular or rounded, lower jaw small, directing forward; body depth 3.2–4.2 times in standard length.. 4

3a No or few isolated scales on flank; black bars wider at dorsal part in male, narrower in ventral region............ A. saldae

3b 38–46 total, overlapping scales along lateral series; male with black bars regularly shaped, not wider at dorsal part..................................................................................................... A. splendens

4a Caudal peduncle depth 11–14% SL; head depth at nape 61–69% SL; head width at nape 51–60% SL; nuptial males with grey dorsal-fin base............................................................................... A. sureyanus

4b Caudal peduncle depth 16–18% SL; head depth at nape 68–75% SL; head width at nape 62–74% SL; nuptial males with completely black dorsal fin...................................................................... A. transgrediens

5a Male with irregularly set and shaped, dark-brown bars, bars with white spots or vermiculate pattern, some large individuals plain dark-grey with some yellow blotches........................................................ A. irregularis

5b Male with regularly set and shaped dark-brown or black bars, without white spots in bars............................ 6

6a Male with a completely black anal fin or anal fin white with a wide black margin, without black bands or blotches.................................................................................................... A. fontinalis

6b Male with yellow or white anal fin with a narrow black margin, usually with 1–5 black bands or rows of blotches.......... 7

7a Male with 4–14 vertical rows of small black or brown spots on caudal fin; male with 13–25 narrow brown bars on body; female larger than 40 mm SL usually without back spots or blotches on flank except one bold black blotch at middle of hypural..................................................................................... A. villwocki

7b Male with 1–4 bold black vertical bars on caudal fin; male with 5–13 black bars on body; female with bold back spots or/and blotches on flank...................................................................................... 8

8 Male with black dorsal-fin origin, dorsal fin with black distal margin and white proximal band or with a proximal row of white spots or blotches distinctly or slightly above dorsal base....................................................... 9

8b Male with hyaline or white dorsal-fin base, dorsal fin completely black or with greyish or black distal margin and a white line or row of white spots at dorsal-fin base or very slightly above.................................................. 10

9a Male with wide, white proximal band in black dorsal; last lateral bar in male regularly shaped, not fused with penultimate bar............................................................................................... A. iconii