Fig. 2.

Examples of the Haplochromine blotch polymorphism (all females). (A) Lake Victoria, from top: Neochromis omnicaeruleus: ancestral brown phenotype (P morph), orange blotched (OB morph), white blotched (WB morph); Paralabidochromis chromogynos (WB morph); P. chilotes (WB morph). Paralabidochromis photos by Ole Seehausen. (B) Lake Malawi, from top: Labeotropheus trewavasae (P morph); L. trewavasae (OB morph); Metriaclima xanstomachus (OB morph); M. pyrsonotus (OB morph, commonly called ‘orange’ morph); M. callainos (OB morph, commonly called ‘white’ morph). All of the morphs presented are heterozygous for the OB allele of pax7, regardless of degree of blotching. (Malawi photos by Reade Roberts).