Species;"Ammodytes marinus";"Ammodytes tobianus";"Hyperoplus immaculatus";"Hyperoplus lanceolatus";"Meristic characters";"Morphometric measurements";"Percentage standard length" "Dermal plicae (DP)";"140–150; 143.1 ± 2.6 (24)";"123–135; 128.5 ± 3.0 (21)";"179–196; 187.8 ± 5.4 (8)";"169–194; 182.6 ± 6.4 (29)" "Dorsal-fin rays (DR)";"56–62; 59.1 ± 1.4 (27)";"51–55; 52.8 ± 1.1 (21)";"59–61; 60.1 ± 0.6 (8)";"54–57; 55.9 ± 0.8 (29)" "Anal-fin rays (AR)";"28–31; 29.5 ± 0.8 (27)";"25–30; 27.8 ± 1.3 (21)";"31–32; 31.8 ± 0.5 (8)";"28–30; 29.1 ± 0.8 (29)" "Pectoral-fin rays (PR)";"12–15; 13.6 ± 0.6 (26)";"12–13; 13.0 ± 0.2 (21)";"13–15; 14.1 ± 0.6 (8)";"13–14; 13.5 ± 0.5 (29)" "Principal caudal-fin rays (CR)";"15 ± 0 (27)";"15 ± 0 (21)";"15 ± 0 (8)";"15 ± 0 (29)" "Upper arch gill rakers (UR)";"5–6; 5.0 ± 0.2 (24)";"5 ± 0 (21)";"5 ± 0 (8)";"5 ± 0 (29)" "Lower arch gill rakers (LR)";"18–20; 18.6 ± 0.8 (24)";"20 ± 0 (21)";"23–25; 24.3 ± 0.7 (8)";"20–22; 20.7 ± 0.8 (29)" "Total gill rakers (GR)";"23–26; 23.6 ± 0.9 (24)";"25 ± 0 (21)";"28–30; 29.1 ± 0.6 (8)";"25–27; 25.7 ± 0.8 (29)" "Precaudal vertebrae (PV)";"42–44; 42.9 ± 0.7 (27)";"36–41; 38.1 ± 1.4 (21)";"42–43; 42.9 ± 0.4 (8)";"38–42; 40.3 ± 0.8 (29)" "Caudal vertebrae (CV)";"26–28; 26.7 ± 0.5 (27)";"24–26; 25.1 ± 0.6 (21)";"29–30; 29.5 ± 0.5 (8)";"25–28; 26.5 ± 0.7 (29)" "Total vertebrae (TV)";"68–71; 69.6 ± 0.9 (27)";"60–66; 63.2 ± 1.4 (21)";"72–73; 72.4 ± 0.5 (8)";"65–68; 66.8 ± 0.8 (29)" "Margins of dorsal and anal fins straight with rays of equal length (MDAS)";"yes (27)";"yes (21)";"yes (8)";"yes (29)" "Body covered in oblique plicae bearing the scales (BCOP)";"yes (27)";"yes (21)";"yes (8)";"yes (29)" "Premaxillae clearly protrusible (PCP)";"yes (27)";"yes (21)";"no (8)";"no (29)" "Two vomerine teeth present (VTP)";"no (27)";"no (21)";"yes (8)";"yes (29)" "Conspicuous dark spot on either side of snout (DSSS)";"no (27)";"no (21)";"no (8)";"yes (29)" "Belly scales in tight chevrons (BSTC)";"no (27)";"yes (21)";"yes (8)";"not clearly detectable (29)" "Scales over musculature at base of caudal fin (SBCF)";"no (27)";"yes (21)";"yes (8)";"yes (29)" "Scales present in the midline anterior to dorsal fin (SADF)";"no (27)";"yes (21)";"yes (8)";"yes (29)" "Standard length (SL, mm)";"61.2–193; 136.7 ± 29.7 (27)";"121.5–146.4; 134.1 ± 7.7 (21)";"220.4–270.1; 251.4 ± 15.0 (8)";"165.0–291.0; 219.3 ± 32.7 (29)" "Body depth at dorsal-fin origin (BDD)";"5.9–11.1; 9.1 ± 1.3 (26)";"8.3–11.9; 9.5 ± 0.8 (21)";"5.8–7.9; 6.8 ± 0.9 (8)";"5.6–8.8; 7.0 ± 0.9 (29)" "Body depth at anal-fin origin (BDA)";"4.9–10.1; 8.1 ± 1.2 (27)";"7.3–10.4; 9.4 ± 0.8 (20)";"6.6–8.2; 7.5 ± 0.5 (8)";"5.2–8.0; 6.7 ± 0.6 (28)" "Body with at dorsal-fin origin (BWD)";"4.1–6.4; 5.3 ± 0.7 (26)";"4.0–7.6; 6.0 ± 0.9 (21)";"5.6–8.2; 6.5 ± 0.8 (8)";"4.3–7.2; 5.4 ± 0.8 (29)" "Head length (HL)";"17.6–22.6; 20.0 ± 1.1 (26)";"18.4–21.4; 19.6 ± 0.8 (21)";"18.3–20.2; 19.4 ± 0.7 (8)";"20.2–23.0; 21.7 ± 0.6 (29)" "Snout length (SNL)";"5.1–6.1; 5.7 ± 0.3 (26)";"5.1–6.0; 5.4 ± 0.3 (21)";"6.0–6.3; 6.1 ± 0.1 (8)";"5.0–8.1; 7.2 ± 0.5 (29)" "Orbit diameter (OD)";"2.7–4.4; 3.2 ± 0.5 (26)";"2.6–3.5; 3.0 ± 0.3 (21)";"1.9–2.5; 2.3 ± 0.2 (8)";"2.0–4.5; 2.5 ± 0.5 (29)" "Interorbital width (IW)";"2.0–3.5; 2.4 ± 0.3 (27)";"2.1–2.9; 2.4 ± 0.2 (21)";"2.8–3.6; 3.2 ± 0.3 (8)";"2.7–3.7; 3.3 ± 0.3 (29)" "Upper jaw length (UJL)";"4.6–10.3; 6.7 ± 1.0 (26)";"5.4–7.0; 6.4 ± 0.4 (21)";"4.7–6.0; 5.3 ± 0.4 (8)";"6.5–8.1; 7.1 ± 0.3 (29)" "Caudal peduncle depth (CPD)";"2.2 -2.9; 2.6 ± 0.2 (26)";"2.8–3.2; 3.0 ± 0.1 (21)";"2.5–2.9; 2.7 ± 0.1 (8)";"2.3–2.8; 2.5 ± 0.1 (29)" "Caudal peduncle length (CPL)";"3.2–5.6; 4.1 ± 0.5 (27)";"3.5–5.4; 4.3 ± 0.5 (21)";"4.4–6.4; 4.8 ± 0.7 (8)";"3.9–5.7; 4.9 ± 0.4 (29)" "Prepectoral length (PPL)";"16.6–21.7; 18.6 ± 1.0 (25)";"14.8–20.4; 18.6 ± 1.1 (21)";"17.9–18.7; 18.4 ± 0.3 (8)";"19.5–22.1; 20.8 ± 0.7 (29)" "Predorsal length (PDL)";"23.5–28.1; 25.3 ± 1.0 (26)";"24.0–27.3; 25.4 ± 1.0 (21)";"26.1–27.6; 26.6 ± 0.5 (8)";"25.7–30.4; 27.9 ± 1.0 (29)" "Preanal length (PAL)";"63.4–66.8; 64.9 ± 1.1 (27)";"60.3–67.0; 63.7 ± 1.9 (21)";"60.2–64.1; 62.8 ± 1.4 (8)";"45.4–70.6; 64.9 ± 4.1 (29)" "Pectoral-fin length (PFL)";"8.6–11.9; 9.9 ± 0.7 (25)";"9.4–11.4; 10.4 ± 0.5 (21)";"7.2–8.2; 7.7 ± 0.4 (8)";"6.7–8.7; 7.7 ± 0.6 (28)" "Dorsal-fin base length (DFBL)";"66.6–72.0; 69.8 ± 1.4 (27)";"66.9–70.8; 69.2 ± 1.1 (21)";"68.1–69.8; 69.1 ± 0.7 (8)";"65.5–69.2; 67.4 ± 1.1 (29)" "Anal-fin base length (AFBL)";"28.9–32.4; 30.5 ± 1.0 (27)";"26.7–33.4; 31.6 ± 1.9 (21)";"30.5–33.8; 32.4 ± 1.2 (8)";"28.4–32.1; 29.8 ± 1.0 (29)" "Caudal-fin length (CFL)";"8.3–11.5; 10.1 ± 0.7 (26)";"9.0–12.0; 10.3 ± 0.7 (21)";"8.5–9.7; 8.9 ± 0.4 (8)";"7.6–10.3; 8.9 ± 0.7 (28)" "Dorsal-fin height (DFH)";"3.6–6.0; 4.7 ± 0.7 (27)";"3.9–6.1; 4.8 ± 0.6 (21)";"3.4–4.6; 4.1 ± 0.4 (8)";"2.7–5.7; 3.9 ± 0.6 (29)" "Anal-fin height (AFH)";"2.6–6.2; 4.7 ± 0.8 (27)";"3.4–5.8; 4.8 ± 0.5 (21)";"2.5–4.6; 3.9 ± 0.7 (8)";"2.7–5.6; 4.1 ± 0.6 (29)"