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♦ 1Active browsing by mouthbrooding femalesof Tropheus duboisi and Tropheus moorii (Cichlidae) to feed the young and/or themselves, Yasunobu Yanagisawa and Tetsu Sato, Environmental Biology of Fishes 27: 43-50, 1990
♦ 2del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.).
Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
♦ 3Jorrit H. Poelen, James D. Simons and Chris J. Mungall. (2014).
Global Biotic Interactions: An open infrastructure to share and analyze species-interaction datasets. Ecological Informatics.