Rapid evolution of cone identity and retinal topography in deep-water crater lake cichlids
Deep-water habitats have been colonized repeatedly by fishes, driving the evolution of visual systems under extremely low-light conditions. Here, we investigated visual adaptation in cichlids from the Barombi Mbo crater lake by comparing shallow- and deep-water species using retinal single-cell transcriptomics and analyses of retinal specializations. The shallow-water species Pungu maclareni…
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