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![Fig. 1 Benthic-to-pelagic transitions during the Baikal sculpin #adaptive radiation. (A) Bathymetric map of Lake Baikal [data from (De Batist et al. 2006 )]. (B) The adaptive radiation of the Baikal sculpins from a shallow benthic common ancestor into bathybenthic, ben- thopelagic, and #pelagic species. (C) Cladogram and skull reconstructions at optimum brightness for each scan from selected species of Baikal #sculpins. Red indicates pelagic (filled circle, Comephorus ) or benthopelagic (unfilled circle, Cottocomephorus ) species, gray indicates benthic species and black benthopelagic species. Cladogram and habitat associations adapted from ancestral state reconstructions in (Sandel et al. 2025 ). Skeleton brightness optimized for each scan. Scale bars in C represent 10 mm.](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:2646spzjwjyehz3svwrjfs2q/bafkreierhelj5cewsf4e72bpjk6hsh6d2covyoovxtbveigwtvqp26fpoa)
