Segregation of Species-Specific Male Attractiveness in Hybrid Lake Malawi Cichlid Fish
Figure 1
Wild-type males and females and second-generation hybrid males. Wild-type male and female Pseudotropheus fainzilberi and P. emmiltos from Mphanga Rocks, Lake Malawi, as well as the twelve second-generation (F2) male hybrids used in replicates 1–3. The hybrid index was based on variation in colour of the dorsal, caudal, and anal fins. Note that the wild-type males illustrated show fully developed territorial/breeding dress, whereas the F2 males show less well-developed colours, and vary in their degree of expression. Photos by Markos Alexandrou, Alan Smith, and Katie Woodhouse
