 This species may also be referred to as the eventooth shark, smoothtooth shark, or night shark (usually used for "C. signatus").As is the case for most "Carcharhinus" species, attempts to analyze the finetooth shark's phylogenetic relationships have yielded variable results.In 1988, Leonard Compagno grouped this species with the spinner shark ("C. brevipinna"), blacktip shark ("C. limbatus"), graceful shark ("C. amblyrhynchoides"), and smooth tooth blacktip shark ("C. leiodon"), on the basis of morphological characters.