Figure 1.

The homologous landmarks (LMs) and semi-landmarks (semi-LMs) used in the analysis of the fish body variation illustrated in Alepes djedaba (image modified under Creative Commons licence from original photographs by J. E. Randall, retrieved from http://pbs.bishopmuseum.org/images/JER/). Semi-LMs are represented by solid rectangles, LMs by circles with crescent numeration starting from snout: (1) anterior tip of the snout (premaxilla), (2) posterior end of the maxilla, (3) centre of the orbit, (4) anterodorsal origin of the opercle, (5) posterodorsal edge of the opercle, (6) ventral tip of the subopercle, (7) base of the isthmus, (8) and (9) superior and inferior insertion of the pectoral fin, (10) anterior origin of the posterior lobe of the dorsal fin, (11) posterior insertion of the dorsal fin, (12) insertion of first ray of dorsal lobe of the caudal fin, (13) insertion of first ray of ventral lobe of the caudal fin, (14) posterior insertion of the anal fin, (15) anterior origin of the anal fin and (16) insertion of the pelvic fin.