Rapid Divergence of Visual Systems and Signaling Traits to Contrasting Light Regimes During Early Speciation of African Crater Lake Cichlid Fish.

Acknowledgements: We thank staff of the Tanzanian Fisheries Research Institute in Kyela for their assistance during field work. We thank Jane Coghill and Christy Waterfall of the Bristol Genomics Facility for Sequencing Support. We thank Ad Konings for the images of Lake Masoko fish in situ and Julie Johnson for paintings of our focal species. Sampling permissions were issued by the Tanzanian Commission for Science and Technology, permit numbers 2014-374-ER-2011-103 (MG); 2015-104-ER-2011-103 (AH); 2017-231-NA-2011-103 (GT).