Alburnoides economoui is distinguished from all its congeners in Greece by having a completely or almost completely scaleless ventral keel. Additional combination of diagnostic characters include the following: snout conical and slightly pointed; snout length shorter than eye diameter; mouth terminal, uppermost point of cleft below level of the middle of the eye to the lower margin of pupil; mouth cleft in lateral view considerably slanted and curved in its posterior part; relatively deep caudal peduncle (its depth 2.2?2.5 times in body depth at dorsal fin origin); dorsal fin usually with 8 1/2 branched rays; anal fin usually with 13 1/2 branched rays; lateral line with 42?47 + 0?2 pored scales; usually 9 scales between lateral line and dorsal fin origin and 3?4 scales between lateral line and midline of the belly; 19?24 pre-dorsal scales; pelvic-fin origin about midway between pectoral-fin and anal-fin origins or slightly closer to anal-fin origin; caudal fin clearly forked with lobes moderately pointed (Ref. 116746).