Diagnostic Description
provided by Fishbase
Body elongate, laterally compressed. Greatest body depth at origin of first dorsal fin. Scales absent, except for lateral-line scales, embedded in skin. Kali falx is diagnosed from its congeners by a unique characteristic: first tooth in lateral remarkably enlarged, 17.2-20.5% in premaxillary length, sickle-shaped, projecting anteriorly (vs. first tooth in lateral series of premaxilla of same size or smaller than adjacent teeth in K. colubrina, K. kerberti, K. macrodon, K. macrura, and K. parri; fang-like, 15.2-16.4% in premaxillary length, slightly curved, not projecting anteriorly in K. indica).
