Key to species of Luciobarbus in the African Mediterranean Sea basin

The key is developed based on materials examined listed at the end of the text.

1a Barbels thick, rostral-barbel origin close to tip of snout............................................. L. guercifensis

1b Barbels thin, rostral-barbel origin clearly behind tip of snout.................................................... 2

2a Last unbranched dorsal-fin ray serrated along 2/3 of its length.................................................. 3

2b Last unbranched dorsal-fin ray serrated along almost its entire length............................................. 8

3a Caudal peduncle 1.2–1.3 times longer than deep............................................................. 4

3b Caudal peduncle 1.3–1.5 times longer than deep............................................................. 6

4a Predorsal length 46–52% SL; interorbital distance 40–44% HL; 43–47+1–3 lateral line scales...... Luciobarbus setivimensis

4b Predorsal length 52–59% SL; interorbital distance 36–46% HL; 41–45+1–3 lateral line scales......................... 5

5a Pectoral-fin length 17–21% SL, 60–79% HL; usually 41+1–2 lateral line scales................ Luciobarbus mascarensis

5b Pectoral-fin length 21–24% SL, 79–90% HL; 43–45+1–3 lateral line scales................... Luciobarbus lanigarensis

6a Caudal peduncle depth 13–14% SL; 43–47+1–2 lateral line scales............................ Luciobarbus numidiensis

6b Caudal peduncle depth 10–13% SL; 41–45+1–2 lateral line scales............................................... 7

7a Predorsal length 46–52% SL; Interorbital distance 36–39% HL; 41–43+1–2 lateral line scales; 4 unbranched dorsal-fin rays................................................................................... Luciobarbus leptopogon

7b Predorsal length 52–56% SL; Interorbital distance 33–40% HL; 42–45+1–2 lateral line scales; usually 5, very rarely 4 unbranched dorsal-fin rays............................................................ Luciobarbus yahyaouii

8a Anal-fin length 19–23% SL.......................................................... Luciobarbus numidiensis

8b Anal-fin length 16–19% SL............................................................................. 9

9a Anal-fin base length 8–10% SL; 41–43+1–2 lateral line scales................................ Luciobarbus chelifensis

9b Anal-fin base length 6–8% SL; 43–47+1–3 lateral line scales................ Luciobarbus callensis / Luciobarbus rifensis