Pam Chin has been replying to cichlid questions for over twenty years. Highly respected and experienced aquarist, Pam has visited cichlid habitats around the world, and bred in her's and her husband Gary fish house hundreds of cichlid species. Besides her job, she still devotes time to help any person with a cichlid question!
Bleher, Heiko. 2008. "The Discovery of a New, Solid Blue Heckel Discus". Cichlid News Magazine (crc01551).
Bleher, Heiko & K.N. Stölting, W. Salzburger & A. Meyer. 2007. "Revision of the genus Symphysodon Heckel 1840 (Teleostei: Perciformes: Cichlidae) based on molecular and morphological character". Aqua: International Journal of Ichthyology. v. 12(n. 4), pp. 133-174 (crc01797) (abstract).