Kali Falx (Kali falx) is a ray-finned fish of the family Chiasmodontidae. It inhabits marine (saltwater) waters in deep-water environments. This species can reach a maximum total length of 16.4 cm. It occurs at depths between 1300 and 2870 metres. With a trophic level of 3.7, it is a mid-level predator. It is assessed as Least Concern on the IUCN Red List.
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).: elongated; Cross section: compressed.
Behavioural data for Kali Falx is currently being reviewed.
Marine; bathypelagic; depth range 1300 - 2870 m . Tropical; 29°N - 8°N
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