Character Key scale (KS) Lateral line scale (LS)
Type of scale Cycloid Cycloid
Shape of scale Polygonal Circular, cordate.
Anterior margin Round and wavy Wavy
Lateral field Convex Convex
Focus shape, size and position Round, small and antero-central Absent
Circuli in anterior field Closely arranged Closely arranged
Circuli in posterior field Widely spaced and discontinuous Widely spaced and discontinuous
Posterior margin. Round and smooth Round and smooth
Lepidonts Absent Absent
Chromatophores Absent Absent