Commonly known as the 'Ninja Shrimp', Caridina serratirostris has recently been reclassified as two independent but related shrimp by Dr Tim Page of Griffith University. “The final factor in the separation of the Ninja shrimp from serratirostris is based on the length of the stylocerite according to De Man’s works. This element varies depending on the populations of Caridina serratirostris and of Caridina celebensis, the distinction between the two species was questioned more than once.â€