Cercamia, , Randall & Smith, 1988

Fraser, Thomas H., Bogorodsky, Sergey V., Mal, Ahmad O. & Alpermann, Tilman J., 2021, Review of the cardinalfishes of the genus Cercamia (Percomorpha: Apogonidae) of the Red Sea and Indian Ocean with descriptions of three new species, Zootaxa 5039 (3), pp. 363-394 : 369

Key to the Indian Ocean species of Cercamia : overlapping variation may render the key unsatisfactory for single specimens

1 Second dorsal fin I,10; no melanophores on cheek................................................ C. laamu n. sp.

- Second dorsal fin I,9; melanophores on cheek present......................................................... 2

2 Developed gill rakers on lower limb 10–11; anal-fin rays usually 11; oblique iridescence bluish stripe dorsoposteriorly on peritoneum................................................................................. C. spio n. sp.

- Developed gill rakers on lower limb usually 12–13; anal-fin rays usually 12–13; no iridescence stripe posteriorly on peritoneum.......................................................................................... 3

3 Developed gill rakers on lower limb usually 12; anal-fin rays usually 12................................... C. eremia

- Developed gill rakers on lower limb usually 13; anal-fin rays usually 13......................... .. C. mascarene n. sp.