The largest amount of variation is displayed at the supra-dorsal element (with high values also for the following two dorsal ones).
3%) separates the pre and post dorsal abdominal vertebrae (with the exception of V4), and the most terminal caudal structures from the rest of the tail.
A group of vertebrae before (from V4 to V9) and after (from V13 to V19) the dorsal fin shares a common lateral shape.
Two elements (V11 and V12) that fully lie under the dorsal fin, and that tighten anatomical and functional relations with this structure, group together and are referred to as dorsal vertebrae.
3) in total number of dorsal scales, the lowest number ever recorded for L.
dulcis dissectus examined, the total number of dorsal scales varied from 220-255 (mean 236.
dulcis dissectus because of its higher dorsal count (234).
With the larger sample sizes in the present study, an analysis of dorsal scale counts does not support a broad intergradation zone between L.
A species of Synodus differentiated from its congeners by the following combination of characters: dorsal-fin rays 11-12; anal-fin rays 11; total caudal rays 40-42; dorsal segmented caudal rays 9; ventral segmented caudal rays 9-10; dorsal procurrent caudal rays 11-12; ventral procurrent caudal rays 9-10; pelvic-fin rays 8; pectoral-fin rays 11-13; total vertebrae 49-52, modally 50; pored lateral-line scales 49-52, modally 51; median predorsal scales 16 or 17; scale rows on cheek 6-8; HL 15.
Dorsal-fin rays 11-12; anal-fin rays 11; total caudal-fin rays 40-42; dorsal segmented caudal rays 9; ventral segmented caudal rays 9-10; dorsal procurrent caudal rays 11-12; ventral procurrent caudal rays 9-10; pelvic-fin rays 8; pectoral-fin rays 11-13; total vertebrae 49-52, modally 50; predorsal vertebrae 12 or 13; scales ctenoid; pored lateral-line scales, 49-52, modally 51, although counts of up to 55 have been reported (Anderson et al.
7%), snout triangular in dorsal view; orbit diameter 3.
Dorsal and anal fins each flanked basally by 10-12 half scales, remainder of dorsal and anal fins without scales; large, diamond-shaped scales covering pelvic-fin base, remainder of pelvic fin and pectoral fin without scales; 5-7 rows of body scales extending onto base of caudal fin; upper and lower caudal lobes each with a single, enlarged, horizontally elongate scale.