Luciobarbus Heckel in Russegger 1843

Key to species of Luciobarbus in the African Mediterranean and Sahara basins in Central Algeria and Tunisia

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 Usually 49–51+1–3 lateral line scales; 7½–8½ scale rows below lateral line; dorsal-fin origin behind of vertical of pelvic-fin origin.................................................................................... L. biscarensis

2b Usually 41–47+1–3 lateral line scales; 4½–6½ scale rows below lateral line; dorsal-fin origin in front or above vertical of pel vic-fin origin......................................................................................... 3

3a Last unbranched dorsal-fin ray serrated along 2/3 of its length; anal-fin length 19–22% SL........................... 4

3b Last unbranched dorsal-fin ray serrated along almost its entire length; anal-fin length 16–19% SL...................... 7

4a Predorsal length 46–52% SL............................................................................. 5

4b Predorsal length 52–58% SL............................................................................. 6

5a Interorbital distance 36–39% HL; 41–43+1–2 lateral line scales.............................. Luciobarbus leptopogon

5b Interorbital distance 40–44% HL; 43–47+1–3 lateral line scales............................. Luciobarbus setivimensis

6a Distance between pelvic and anal-fin origins 21–24% SL; caudal peduncle 1.3–1.5 times longer than deep; usually 5, very- rarely 4 unbranched dorsal-fin rays...................................................... Luciobarbus yahyaouii

6b Distance between pelvic and anal-fin origins 24–29% SL; caudal peduncle 1.2–1.3 times longer than deep; 4 unbranched dor- sal-fin rays....................................................................... Luciobarbus mascarensis

7a Anal-fin base length 8–10% SL; 41–43+1–2 lateral line scales................................ Luciobarbus chelifensis

7b Anal-fin base length 6–8% SL; 43–47+1–3 lateral line scales................ Luciobarbus callensis / Luciobarbus rifensis