Review of the cardinalfishes of the genus Cercamia (Percomorpha: Apogonidae) of the Red Sea and Indian Ocean with descriptions of three new species Author Fraser, Thomas H. Author Bogorodsky, Sergey V. 0000-0002-8723-4576 Station of Naturalists, Omsk, Russia. & Senckenberg Research Institute and Natural History Museum Frankfurt, Senckenberganlage 25, 60325 Frankfurt a. M., Germany. Tilman. Alpermann @ senckenberg. de; https: // orcid. org / 0000 - 0002 - 8723 - 4576 lpermann@senckenberg.de Author Mal, Ahmad O. Marine Biology Department, Faculty of Marine Sciences, King Abdulaziz University, Jeddah Saudi Arabia. Author Alpermann, Tilman J. 0000-0002-8723-4576 Senckenberg Research Institute and Natural History Museum Frankfurt, Senckenberganlage 25, 60325 Frankfurt a. M., Germany. Tilman. Alpermann @ senckenberg. de; https: // orcid. org / 0000 - 0002 - 8723 - 4576 lpermann@senckenberg.de text Zootaxa 2021 2021-09-16 5039 3 363 394 journal article 10.11646/zootaxa.5039.3.3 1175-5326 5511436 8DFB94B1-9311-4AF9-8AA7-90198C6404FB 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.