1a. D.24-26; Ltr. 6-7/16-17; barbel robust, equal half eye. .............Sc. dussumieri
1b. D. 28; Ltr. 6-7/11-12; barbel slightly shorter than eye. .......................Sc.dussemieri
1c. D. 30-31; Ltr. 4-5/14-15; barbel short, less than diameter of pupil to obsolete.... Sc. macropterus