Difference in body size (or sexual dimorphism) between males and females is common across the animal kingdom. One of the most extreme examples of sexual dimorphism is found in the cichlid fish species ...

Rodrigues, Raoni Rosa, Carvalho, Lucélia Nobre, Zuanon, Jansen, and Del-Claro, Kleber. 2009. "Color changing and behavioral context in the Amazonian Dwarf Cichlid ...

In certain Lake Tanganyika cichlids breeding in empty snail shells, there are two extreme sizes of males: giants and dwarfs. Researchers have analyzed the genomes of these fish and found out how the ...