Astatotilapia burtoni

Astatotilapia burtoni, Burton's Mouthbrooder, is one of the most scientifically studied cichlids in the world, used extensively in neuroendocrinology research due to the dramatic changes in male physiology and colour linked to social dominance. Dominant males are vividly coloured in blue and orange with prominent black eye bars and orange lachrymal stripes; subordinate males rapidly become drab and cryptic when displaced. This colour-shifting behaviour is immediately visible and remarkable in the aquarium.

The species is native to the southern periphery of the Lake Tanganyika and the East African river system including the Lake Victoria drainage, occupying a somewhat different niche than the core Victorian lake endemics. It is hardy, prolific, and relatively tolerant of water quality variation, making it one of the more forgiving African haplochromine cichlids for beginners.

A. burtoni breeds very readily in captivity, producing large clutches that females hold as a maternal mouthbrooder. Watching dominance dynamics shift and male colouration change in real time makes this species one of the most educationally fascinating African cichlids available.