The visceral side of cycloid scales is relatively smooth, with a knobby area in the middle of the scales (Fig.
The radii on ctenoid scales are much less numerous than those on cycloid scales (compare with Fig.
Cycloid scales, overgrowing ctenoid scales and overgrowing ctenoid tubercles, occur on the body of this species.
An example of cycloid scales of Platichthys flesus trachurus from the Baltic Sea is shown in Fig.
Females of the European plaice in our samples carry cycloid scales only, while males have both cycloid and ctenoid (peripheral ctenoid) scales.
6I, N), which still have elements of cycloid scales (circuli, radii) in the middle, it can be assumed that in ontogeny at least some of the overgrowing ctenoid scales transform into overgrowing ctenoid tubercles.
31, n = 19), no scales on cheek or opercle (except in two specimens with one or two cycloid scales respectively on upper part of opercle); midline of predorsal usually scaleless, but with 6 scales in holotype, 4 in a 20.
37), cheek with 1-2 scales in upper row and 7-8 cycloid scales in main lower row, upper two-thirds of opercle covered with three longitudinal rows of 2, 2 and 1 cycloid scales respectively (the posterodorsal scale may occasionally be weakly ctenoid); 2 vertical rows of cycloid scales on pectoral base, with 3 scales in posterior row; 4 cycloid prepelvic scales in midline; 11-12 ([bar.
79), no scales in midline of predorsal, cheek or on opercle; pectoral base with 4-5 vertical rows of cycloid scales, outer row of 7-8-10 (n = 16) scales, anteriormost row largest, posteriormost smallest; 7-9 prepelvic cycloid scales in midline anterior to pelvic-fin base (2 specimens with 11, where scales extended anterior to ventral tips of cleithra on isthmus); 16-18 circumpeduncular - scales ([bar.
5 mm SL specimen); no scales on cheek; a single row of 3 cycloid or weakly ctenoid scales on opercle; 3-4 vertical rows of scales on pectoral fin base with 4-5 cycloid scales in posterior row; 5-8 ([bar.
papayum in meristic values and in general shape, but adults have 2-3 cycloid scales on the cheek.